Question

If the length and breadth of a rectangle are doubled then its perimeter is (1) tripled (2) doubled (3) made half (4) None of these

Answer 1

.........hay.........
........ . .. ......
perimeter = 2(l+b)
new perimeter = 2( 2l +2b)
= 4 ( l+b)
so.... perimeter will double

Answer 2

answer; perimeter is double