Question

The length of a rectangle is 15 CM greater than its breadth its perimeter is 150 centimetre find the dimensions of the rectangle

Answer 1

Let the breadth=x

the length =x+15

given perimeter= 150

we know

Perimeter of rectangle = 2(l+b)

150 = 2( x+ x+15)

75 = 2x +15

60 = 2x

30=x

therefore breadth = 30 cm

length = 30 +15 = 45 cm

check

150 = 2( 45+30)

150 = 2(75)

150 = 150

LHS=RHS

hence prooved