Question

A circular lawn of radius 10 mhas a circular flower bed of radius 5m dug into it.

Answer 1

Answer:

75π $m^{2}$  ≈  235.62 $m^{2}$

Step-by-step explanation:

R represents the radius of the lawn

r represents the area of the circular bed

So,

Area of the remaining lawn, A = area of the lawn - area of the circular flower bed

A = πR^2 - π^2

A = π(R^2 - r^2)

A = π(10^2 - 5^2)

A = π( 100 - 25)

A = 75π  $m^{2}$  ≈   235.62$m^{2}$

Answer 2

A=3.14x10•10=314

10x10=100
3.14x100=314