Question

The length of a textbook is 28 cm and its breadth is 21 cm . find the perimeter of the book​

Answer 1

Step-by-step explanation:

perimeter = 2(l+b)

perimeter = 2(28+21)

perimeter = 98cm

Answer 2

length = 28 cm

breadth = 21 cm

so,

perimeter= 2(l+b)

= 2(28+21) cm

= (2 × 49) cm

= 98 cm

So, the perimeter is 98 cm.

Hope this helps you.