Question

length of a rectangle = x and breadth x+4 and perimeter=24 find is area

Answer 1

l = x. and b = x+4

so perimeter = 2(x+ x+4 )

24 = 2(2x + 4)

2x + 4= 12

2x = 12-4

2x =8

x = 4

l = 4

and

b = 4+4 = 8

Area = l b

Area = 4×8 = 32

Answer 2

perimeter of rectangle =2(l+b)
24=2(x+x+4)
24/2=2x+4
12=2x+4
12-4=2x
8=2x
x=8/2=4
value of x is 4

length =x=4
breadth=x+4=4+4=8

so Area of rectangle is l*b
4*8=32cm²

hope it will help u