If the area of semicircular region is 77cm2 find its perimerte

Answers (1)

Area of Semicircular region is equal half the area of circular region

A=1/2 x 22/7 x r^2

77=1/2 x 22/7 x r^2

77 x 7= 11 x r^2

7 x 7=r x r

r= 7 cm 

 

Perimeter of semicircular region = half the perimeter of circle + diameter of the circle

Perimeter of semicircular region = 1/2 x (2 x 22/7 x r) +2r

Perimeter of semicircular region = 11/7 x 7 + 2 x 7 = 11+14=25

Preparation Products

Knockout NEET May 2021

An exhaustive E-learning program for the complete preparation of NEET..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout BITSAT 2020

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 1999/-
Buy Now
Knockout NEET May 2022

An exhaustive E-learning program for the complete preparation of NEET..

₹ 34999/- ₹ 24999/-
Buy Now
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
Buy Now
Exams
Articles
Questions