Question

plz solve 1st part of question 14

Answer 1

Step-by-step explanation:

Given,

length of full figure = 42cm

There are two semicircles.

By observation,

Radius of 1st semicircle + 2nd semicircle + side of square = 42cm

Both circles are equal,

So, Radius of both semicircle + side of square = 42cm

Now, further observing,

Radius of both semicircle = side of square.

So,

Radius + side = 42cm

Radius = 21cm , Side = 21cm

Radius of one semicircle = 10.5cm

Area of square = side²

= 21 × 21

= 441cm²

Area of one semicircle = 1/2πr²

= 1/2 × 3.14 × 10.5 × 10.5

= 173.1cm²

Since all semicircles are equal,

Area of 4 semicircle = 4×173.1cm²

= 692.4cm²

Area of full figure = 441 + 692.4

= 1133.4cm²

Hope it helps!

Mark me brainliest!