Question

Find the cost of white washing the four walls of a cubical room of side 4cm at the rate of Rs. 20/m2

Answer 1

4×4 =16m²
16 × 4 = 64m²

Answer 2

Side = 4 cm
Surface area of cubical room= 5a sq.
5 × 4×4
5×16 = 80cm. sq.
In m sq. = 80×100 = 800 m
Cost of whit washing = 20 × 800
= 16000 rs...

Hope its helpzz