Question

the length and the breadth of a rectangle are 10cm and 8cm respectively. find its perimeter and are if length and breadth are doubled

Answer 1

Answer:

when the length and breadth of the given rectangle is doubled, the dimensions will be :

length, L = 10x2 = 20cm

breadth, B = 8x2 = 16 cm

now, perimeter = 2(L+B) = 2(20+16) = 2(36) = 72cm

also, area = LxB = 20x16 = 320cm²

:)

Answer 2

Answer:

1st

Length of rectangle =10 cm

Breadth of rectangle =8cm

so , area =2 (L+B)

=2×(10cm+8cm)

=2×18cm

=36cm^2

Step-by-step explanation:

if it becomes double than

length =10×2=20cm

Breadth =8×2=16cm

so Area =2 (L×B)

=2×(20+16)cm

=2×36cm

=72cm