Question

Question is attached with the figure . ...​

Answer 1

Answer:

38.5×10⁴cm²

Step-by-step explanation:

1/4pie*7²

38.5m²

385×10³cm²

Answer 2

Analysis:

In this question, we first have to find the area of the complete figure and then subtract the area of the unshaded part from it.

Solution,

→ The complete figure

Radius = 21 m

Area of quadrant of a circle = ¼πr²

= $\sf{\dfrac{1}{4}\times\dfrac{22}{7}\times21\times21}$

= 346.5 m²

→ The unshaded portion

Radius = 14 m

Area of quadrant of a circle = ¼πr²

= $\sf{\dfrac{1}{4}\times\dfrac{22}{7}\times14\times14}$

= 154 m²

→ Area of the shaded portion

= Area of complete figure - Area of unshaded portion

= 346.5 - 154

= 192.5 m²

✳ 1 m² = 10,000 cm²

So, 192.5 m² = 1925000 cm²

∴ The area of the shaded portion is 19,25,000 cm²