Question

the area of a rec is 150 cm² if its breadth is 10 cm find its Length​

Answer 1

length = 15cm

Step-by-step explanation:

l × b = 150

l × 10 = 150

l = 150/10

l = 15

Answer 2

Answer:

Answer

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 proved.