Question

Find the perimeter -
length = 40 m, breadth = 15 m​

Answer 1

Perimeters of rectangle = 2(L + B)

So

perimeter of rectangle = 2(40+15) = 112cm

Answer 2

$length = 40m \\ \\ breadth = 15m \\ \\ perimeter = 2(l + b) \\ \\ = 2(40 + 15) \\ \\ = 2 \times 55 \\ \\ = 110m$