Question

# A rectangular portion is cut off from a rectangular sheet (figure 1) as shown in figure 2. Find the perimeter of the sheet shown in figure 2.

A

20 m

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

15 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

17.5 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

10 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A 20 m If we just consider the boundary of the sheet, it is easy to observe that the part of the sheet cut off decreases the area but length of the boundary remains same as shown below. Therefore, the perimeter of the sheet in figure 2 will be equal to the one in figure 1. The areas, on the other hand, will be different. P = 2(l + b) = 2(6 + 4) = 20 m Verification; From figure 2, perimeter, P = [6 + 4 + (6 - 1.5) + (4 - 1) + 1.5 + 1] m = 20 m

Suggest Corrections
0
Join BYJU'S Learning Program
Select...
Related Videos
Perimeter of Rectangle
MATHEMATICS
Watch in App
Explore more
Join BYJU'S Learning Program
Select...