Question

find lenght if perimeter is 80cm and breath is 18cm​

Answer 1

◆━━━━━━━▣✦▣━━━━━━━━◆ ◆━━━━━━━▣✦▣━━━━━━━━◆

perimeter =2(l+b)

80=2(l+18)

80/2=l+18

40=l+18

40-18=l

22=l

So the req. length of the rec. is 22cm

◆━━━━━━━▣✦▣━━━━━━━━◆ ◆━━━━━━━▣✦▣━━━━━━━━◆

Thnks♥

Answer 2

Is it a rectangle ?
Mention the shape of the given dimensions.

If is a rectangle , then
perimeter = 80 cm
2( l + b ) = 80 cm
2 ( l + 18) = 80 cm
2l + 36 = 80
2l = 80 - 36
l = 44/2
l = 22 cm