The area of a circular pond is 21.5 m².
Work out the diameter of the circle.
Give your answer correct to the nearest centimetre.

You know the are of a circle is a=πr^2 so you substitute the a because it’s given and you get 21.5= πr^2 you divide by π getting 6.84=r^2 so you square root and you get 2.62. 2.62 is the radius so you multiply by 2 to get the diameter. The diameter of the circle is 5.24

You need to divide 210 square inches by 35 inches and that’s going to give you 6 inches and that’s the length of the hypothenuse of the right triangle i hope that this you : )

You must find the surface of the block therefore 98187 dived by 5628 = 583m squared