Question

If the area of a rectangular plot is 144 sq. m. and its length is 16 m, find the breadth of the plot. Also find the cost of painting a blue border around the plot if the cost is ₹ 3 per metre.

Answer 1

area of rec is l*b

144=16*?

?=9m

perimeter=2(l+b)

2(16+9)

50m

cost of paining=50*3=150

Answer 2

Given: Length =16m

Area of Rectangle = Length× Breadth

144 m² = 16× Breadth

Breadth = 144/16

Breadth = 9 cm

Perimeter of Rectangle = 2(l+b)

= 2 (16+9)

= 2×25

= 50 m

cost of 1m = ₹3

cost of 50m = 50×3

= ₹ 150