Question

diameter 49 area of cercle

Answer 1

We know r = d/2

therefore r = 49/2 
Area of circle = πr²

= 22 / 7 x 49/2 x 49/2
= 1886.5 unit²

Answer 2

here is your answer
diameter =49
and radius of a circle will be 49 / 2
radius =24.5

area of circle =
$\pi {r}^{2}$
=
$\frac{22}{7} \times r \times r$
$\frac{22}{7} \times 24.5 \times 24.5$
=1886.5


hope it helps you