Question

37. (a) A farmer dug flower bed of radius 7m at the center of field. He needs to purchase fertilizer. If
1kg of fertilizer is required for 1m2, how much fertilizer should he purchase?​

Answer 1

Answer:

Area = Pi * (r)^2

or, A = πr^2

thus, A = 3.14159 (7)^2

which is A = 3.14159 * 49

which is 150, using appropriate significant figures (I rounded 153.97 down).

Thus, the farmer will need 150Kg.