Question

solve the problems !!

fast please!!​

Answer 1

Answer:

$144.38 \:{m}^{2} (approx)$

Step-by-step explanation:

At first Calculate the Area of Semicircle -

Area of Semicircle E, J, G -

πr²/2

π(3.5)²/2 ( Diameter is 7 so, radius is 3.5)

12.25π/2

• Area of Semicircle E, J, G is same because The semicircle E, J, G have it's diameter 7 so, it's Area is same.

• Now,

Area of Semicircle B -

πr²/2

π(5.25)²/2 ( bcoz its diameter is 7 + 3.5 = 10.5 , so it's radius is 5.25 )

27.5625π/2

• Now,

Area of Semicircle I -

πr²/2

π(8.75)²/2 ( Diameter is 7 + 7 + 3.5 = 17.5 , so it's radius is 8.75 )

76.5625π/2

Area of Shaded Region -

Area of Semicircle B - Area of Semicircle E + Area of Semicircle I - Area of Semicircle J + Area of Semicircle G

$\frac{27.5625\pi}{2} - \frac{12.25\pi}{2} + \frac{76.5625\pi}{2} \\ - \frac{12.25\pi}{2} + \frac{12.25\pi}{2} \\ \\ \frac{27.5625\pi}{2} - \frac{12.25\pi}{2} + \frac{76.5625\pi}{2} \\ \\ \frac{27.5625\pi - 12.25\pi + 76.5625\pi}{2} \\ \\ \frac{91.875\pi}{2} \\ \\ putting \: the \: value \: of \: \pi = \frac{22}{7} \\ \\ \frac{91.875}{ 2} \times \frac{22}{7} \\ \\ 91.875 \times \frac{22}{14} \\ \\ = 144.375$

Answer 2

Step-by-step explanation:

$\huge\purple{Answer:-\:}\downarrow$

144.375