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You just multipy the length (no matter what it is) by the width (no matter what that is). So... L x W = A Where L is Length, W is Width and A is Area. For your question about the area of a rectangle where the length is twice the width but no numbers are given then I guess a formula could be W x 2W = A. Or send me the exact question and I'll see if I can think of a better answer.
What else can I help you with?
How do you work out the width of a rectangle give an example?
To find the width of a rectangle, you can use the formula for the area, which is Area = Length × Width. If you know the area and the length, you can rearrange the formula to find the width: Width = Area / Length. For example, if a rectangle has an area of 50 square units and a length of 10 units, the width would be 50 / 10 = 5 units.
What is the area of a 7cm square with shown work?
To find the area of a square, you use the formula: Area = side length × side length. For a square with a side length of 7 cm, the calculation would be: Area = 7 cm × 7 cm = 49 cm². Thus, the area of the 7 cm square is 49 cm².
How do you work out the difference of the area of a circle and the area of a square when the radius of the circle is 6cm and the side of length of the square is 12cm?
Do you know how to find the area of a circle when you know the radius ? Good! Do that. Do you know how to find the area of a square when you know the length of the side ? Good! Do that. Now you have two numbers ... the area of the circle and the area of the square. The problem wants you to find the difference of these two numbers. Do you know how to use subtraction to find the difference of two numbers ? Good! Do that.
How To work out Area?
You times length by width
What is the surface area for a cube that is 15mm?
If you are referring to a cube with 15mm sides then this is how you would work it out. A cube has 12 edges of the same length, and 6 faces of the same area. We know area is length^2 (length to the power of 2 / length X length. What you have to find is the total surface areo of all of the faces. If you can work out the area of one face you will know the area of the others. Since the area of one face is the area of one square, we can use the fomula length^2 which is also known as length X length. we also know in this instance the length of the square is 15mm. so we substitute 15 into the formula length X length: 15 X 15 =225 Square mm (we write square millimetres as we are refering to area [2 dimensions] But we have so far only worked out the area of one face. since there are 6 faces on a cube we multiply the area of one face by 6. So in this Case: 225 square mm X 6 =1350 square mm that is how you find the surface area of any cube.
How do you work out find out the area when the length is twice the width?
length*width = 2*width*width i.e square the width and multiply by 2
How do you find the length if you have the width and perimeter?
Subtract twice the width from the perimeter. The answer will be twice the length. Divide by two.
How do you find the area of a right angled triangle when knowing the base?
Knowing just the length of the base you can not work out the area. You need the height and the base or the length of the hypotenuse in order to work out the area.
How do you work out the length and width of a square?
The length and width of a square are equal. Thus, find the square root of the area and the answer = length= width.
How do you work out the width of a rectangle give an example?
To find the width of a rectangle, you can use the formula for the area, which is Area = Length × Width. If you know the area and the length, you can rearrange the formula to find the width: Width = Area / Length. For example, if a rectangle has an area of 50 square units and a length of 10 units, the width would be 50 / 10 = 5 units.
The length of a rectangle is twice the width and diagonal is 25cm work out the area of the rectangle?
Let length be 2x and the width be x and use Pythagoras' theorem: 2x2+x2 = 252 3x2 = 625 Divide both sides by 3 and then square root both sides: x = 14.43375673 cm 2x = 28.86751346 cm Area = 2x*x = 416 and 2/3 square cm
How do you find the width of a rectangle if you know its length and its area?
If you pretend that the width is X .Then you'll know that X times length = area. So if you say the length is 5 ,then the area is 10 the X must be 2 so the width is 2you simply work out what times the length makes the area.
What is the area of a 7cm square with shown work?
To find the area of a square, you use the formula: Area = side length × side length. For a square with a side length of 7 cm, the calculation would be: Area = 7 cm × 7 cm = 49 cm². Thus, the area of the 7 cm square is 49 cm².
How do you work out the difference of the area of a circle and the area of a square when the radius of the circle is 6cm and the side of length of the square is 12cm?
Do you know how to find the area of a circle when you know the radius ? Good! Do that. Do you know how to find the area of a square when you know the length of the side ? Good! Do that. Now you have two numbers ... the area of the circle and the area of the square. The problem wants you to find the difference of these two numbers. Do you know how to use subtraction to find the difference of two numbers ? Good! Do that.
How To work out Area?
You times length by width
What is the surface area for a cube that is 15mm?
If you are referring to a cube with 15mm sides then this is how you would work it out. A cube has 12 edges of the same length, and 6 faces of the same area. We know area is length^2 (length to the power of 2 / length X length. What you have to find is the total surface areo of all of the faces. If you can work out the area of one face you will know the area of the others. Since the area of one face is the area of one square, we can use the fomula length^2 which is also known as length X length. we also know in this instance the length of the square is 15mm. so we substitute 15 into the formula length X length: 15 X 15 =225 Square mm (we write square millimetres as we are refering to area [2 dimensions] But we have so far only worked out the area of one face. since there are 6 faces on a cube we multiply the area of one face by 6. So in this Case: 225 square mm X 6 =1350 square mm that is how you find the surface area of any cube.
How do you find the area of a compound figure with there is a trapezoid and a rectangle?
Work out each figure separately then add them together: Area of a trapezoid = 0.5*(sum of parallel bases)*height Area of a rectangle = length*height
