Question

find the area of a circular park of diameter 140cm​

Answer 1

$\huge{\boxed{\boxed{\underline{\rm{\red{ANSWER}}}}}}$

Diameter - 140 cm

Radius - 140/2

= 70 cm

Area of a circle = π r²

= 22/7 x 70 x 70

= 22 x 10 x 70

= 15,400 cm²

HOPE IT HELPS YOU.!

Answer 2

$\huge\purple{Required \: Answer :}$

Area = 15,400 cm

$\huge{Explanation :}$

Given :

Diameter = 140 cm

To Find :

Area of Circular Park = ?

Formula :

Area of Circular Park =

$\pi {r}^{2}$

Solution :

Diameter = 140 cm

Therefore, Radius = 70 cm

$Area = \pi {r}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{22}{7} \times 70 \times 70 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 22 \times 70 \times 10 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 220 \times 70 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 15400 \: {cm}^{2}$

$\huge\sf\implies{Thanks : ❤}$