Question

a carpet measure 30m*20m. A strip of 4 m wide is cut off from all around. find the area of the remaining carpet and also the area of strip cut-off

Answer 1

Given,
Length of Carpet = 30 m
Breadth of Carpet = 20 m

Area of Carpet = 30×20
= 600 m sq.

After cutting a strip 4 m wide,
New length = 30-(4+4)
= 30-8
= 22 m

New Breadth = 20-(4+4)
= 20-8
= 12 m

New area (A2) = Area of Remaining Carpet
= 22×12
= 264 m sq.

Area of Strip cut off = A1-A2
= 600-264
= 336 m sq.