the wire needed, for four rounds of fencing around a rectangular ground of length 235 m, is 3.2 km. What is the breadth of the ground.
options :
(1) 165 m ,
(2) 155m ,
(3) 175m ,
(4) 170m
Share
the wire needed, for four rounds of fencing around a rectangular ground of length 235 m, is 3.2 km. What is the breadth of the ground.
options :
(1) 165 m ,
(2) 155m ,
(3) 175m ,
(4) 170m
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
Verified answer
Length Of Ground=235 mLET Breadth of ground=X m
Perimeter=2(l+B)
=2(235+x)
=470+2x m
MEANS in 1 round it complete fencing of (470+2x)m
In 4 rounds
4(470+2x)
=(1880+8x)m
In 4 round it completed=3.2 km=3200 m
Then,
1880+8x=3200
8x=3200-1880
8x=1320
X=1320/8
x=165 m
So Breadth=165 m