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How do you work out the area of a semicircle?
Multiply Pi (3.14...) by the radius of the circle squared, then divide that number by 2.
How do you calculate the area of an triangle?
length times width squared
What is the width of a rectangle with the length of 14cm and area 161cm squared?
Width = 161/14 = 11.5 cm
What is the width of a rectangle with the length of 25 in and area of 375 in squared?
width = 375/25 = 15 inches
What is the area of a rectangle 8x9 feet?
Area of a rectangle = length * width = 72 feet-squared
What is the area of a 9 width and 20 length?
it is A= lw a=9(20) a=180ft
What is the formula to find the area of a semicircle?
Pi*radius squared is how to find the area of a semicircle
What is the area of the semicircle (use 3.14 for and rho)?
That would depend on the radius which has not been given but the area of the semi circle will be (pi*radius squared)/2
How do you add area of a semicircle and area of a rectangle?
Simply add the numbers up For example, If the area of a semicirce is 20cm squared and the area of a rectange is 25cm squared, then the total area would be 20 + 25 = 45
How do you work out the area of a semicircle?
Multiply Pi (3.14...) by the radius of the circle squared, then divide that number by 2.
Formula for surface area of a pyramid?
The surface area is length times width plus length. Then you find the square root of the width divided by two and then squared. You add this to the height squared plus the width. The width is multiplied by the square root of 1/2 squared plus the height squared.
What is the area of the semi circle 30 feet?
Is the 30ft the radius or the diameter. The area of a circle = Pi x (radius squared), so, if the diameter is 30ft, making the radius 15ft, the area would be Pi x(15 squared) square feet, and the area of its semicircle would be half of that, so the area required = Pi x (15 squared) divided by 2 = 353.429 sq ft On the other hand, if the diameter is 15ft, making the radius 7.5ft then the area required = Pi x (7.5 squared) sq ft for the full circle and half as much for the semicircle = 88.3573 sq ft As an extra; you will find that the area of the smaller semicircle is exactly one quarter of that of the larger semicircle, and I wonder if you can reason out why that is so.
Half of a circle?
A semicircle is half of a circle, formed by cutting a circle along its diameter line. It has the same curved edge as a circle but only covers half the area. The formula for the area of a semicircle is 1/2 times π times the radius squared.
How do you calculate the area of an triangle?
length times width squared
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the window with a perimeter of 45 feet?
To find the area of the Norman window, you need to divide the perimeter by 2 to get the width of the rectangle, which is 22.5 feet. The radius of the semicircle is half of the rectangle's width, so it's 11.25 feet. The area of the rectangle is 11.25 * 22.5 = 253.13 square feet, and the area of the semicircle is 0.5 * pi * 11.25^2 = 198.93 square feet. So, the total area of the window is 253.13 + 198.93 = 452.06 square feet.
A semicircle with diameter 16 mi?
The area would be 32*pi miles squared. The perimeter would be 16*pi miles.
What is the width of a rectangle with the length of 14cm and area 161cm squared?
Width = 161/14 = 11.5 cm
