What about it? What is the question?
35 cm
To find the area of a rectangle, you multiply the length by the width. In this case, the width is 7cm and the length is 9cm. So, the area would be 7cm x 9cm = 63 square centimeters.
It is an isosceles triangle with 2 equal sides.
4 * 7 = 28 28/2 = 14 sq cm
22 cm
The perimeter is the addition of the all the sides of the shape. For example if a rectangle has two sides which are 4cm and two sides which are 7cm, then the perimeter will be 4cm+4cm+7cm+7cm. The perimeter would therefore be 22cm. The area of a shape is gotten by multiplying the length and breadth of the shape. For example, in a rectangle witrh the same measurements above, the area will be 4cm x 7cm and that would 28cm. You have to use the square sign but I can't do that here.
20cm
Perimeter = 7+7+4+4 = 22 cm
The new dimensions are 4cm and 7cm
It depends on whether you want the width as a fraction of the length or perimeter or something else - like the diagonal.
28 cm squared
The ratio is: 7cm to 1cm
Area 51.
A scalene triangle.
What about it? What is the question?
35 cm