Question

What is the area of a circle whose radius is the diagonal of square whose area is 4cm.sq

Answer 1

Answer

Area of square = 4 sq. cm

Side^2 = Area

.°. Side = 2 cm

Diagonal^2 = 2side^2

Diagonal = 2_/2 cm

Area of circle:

$\pi {r}^{2} = \frac{22}{7} \times 2 \sqrt{2} \times 2 \sqrt{2} \\ \\ = \frac{22}{7} \times 8 \\ \\ = 25.14 \: {cm}^{2}$

Answer 2

Answer in the attachment:-