Question

Cuboid of length , breadth and height are 14m, 20m and 8m respectively.​

Answer 1

Step-by-step explanation:

Area of four walls

= 2 (length*height + breadth*height)

Length = 8 m, Breadth = 6 m, Height = 5 m

Then,

Area of four walls

= 2(8*5 + 6*5)

= 2(40 + 30)

= 2*70 = 140 m^2

Cost of painting

= 140*7

= Rs 980