Question

❤brain by brain❤ question is find the area of the shaded portion. challenge all moderator....

Answer 1

Answer :

Area of shaded portion is $623\:cm^{2}$

Step-by-step explanation :

Given,

Length of rectangle, l = $50$ cm

Breadth of rectangle, b = $14$ cm

Radius of semi circle, r = $\frac{14}{2}=7$ cm

In order to find the area of the shaded portion, we first need to find the area of the rectangle and then subtract the area of the semi circle.

Area of rectangle -

$\implies l\times b$

$\implies 50\times 14$

$\implies 700\:cm^{2}$

Area of semi circle -

$\implies\frac{\pi r^{2}}{2}$

$\implies\frac{\frac{22}{7}\times 7^{2}}{2}$

$\implies 77\:cm^{2}$

Area of shaded portion -

$\implies 700-77$

$\implies 623\:cm^{2}$

Answer 2

Answer -

Area of rectangle = l × b

==> 50 × 14

==> 700 cm^2

Area of semi circle = $\pi r^{2}/2$

==> (22/7 × 7 × 7) ÷ 2

==> 77 cm^2

Area of shaded portion = area of rectangle - area of semi circle

==> 700 - 77

==> 623 cm^2