In the given figure there are 2 semi circle of radius of big semi circle is 42tje area of shaded portion is
1.441
2. 641
3.341
4. 5417
proportion (at a constant work)
Answers
Option (1) 441π.
Area of shaded region is 441π.
Given
To find the shaded portion for the given figure.
From the figure,
A big semi-circle has 2 semi-circles.
Big semi-circle has radius 42 cm.
2 semi-circle has diameter 42 cm, radius will be 42/2 = 21 cm.
Area of big semi-circle = πr²/2
= π × 42 × 42 / 2
= 882π.
Area of two small semi-circle = πr²/2
= π × 21 × 21 / 2
= 220.5π.
There are 2 small semi-circle, so it results in
Area of two small semi-circle = 220.5π + 220.5π
= 441π.
Area of shaded region = Area of big semi-circle - Area of 2 small semi-circle.
= 882π - 441π
= 441 π.
Therefore, area of shaded region is 441π.
To learn more...
1. brainly.in/question/3780007
2. brainly.in/question/12287337