Question

the perimeter of a rectangular is 100 cm and its length is 30 cm what is the breadth of the rectangle and what is the area of the rectangle

Answer 1

p= 100
l=30 

p of a rectangle = 2(l+b)
100=2(l+b)
50=l+b
50-30=b
b=20


area of a square= sxs
30*20=a
600cmsq= area of the rectangle

Answer 2

2 (l+b)=100
L=30cm
2 (30+b)=100
30+b=50
b=50-30
b=20cm