Question

use pi =22/7 a piece of wire is bent to form a square of area 121cm^2. (a) find the length of each side of the square. (b) the perimeter of the square. the same piece of wire is bent to form a circle. (a) calculate the radiua of the circle and the area of the circle

Answer 1

easy! the square root of 121 is 11, so the square side length is 11 cm. the perimeter is therefore 44 cm. to get the diameter, you need to divide 44 by pi (22/7). that is 308/22, or 14cm.
divide that by two to get the radius. radius = 154/22. radius= 7 cm.
radius squared times pi is the area, so the area is 22 cm squared

Answer 2

THANKS