Question

the Length breadth and height of a room are 5m 4m and 3M respectively find the cost of whitewashing the inner of the room and ceiling @ rupees 50 per metre square

Answer 1

3000 rupees to all room

Answer 2

Answer:

Length of room = 5m

Breadth of room = 4m

Height of room = 3m

Total Surface Area = 2(lb+bh+lh)

= 2(5×4 + 4×3 + 5×3)

= 94 cm^2

Area of floor = Length × Breadth

Area of floor = 5 × 4

Area of floor = 20 cm^2

Area of inner room = T.S.A - Area of floor

= (94 -20)cm^2

= 74 cm^2

Cost of white washing = 74×50 = Rs3700