four cubes of edges 5cm are placed side by side and stuck together if the outer surface alone is - Maths - Mensuration

Question

four cubes of edges 5cm are placed side by side and stuck
together if the outer surface alone is painted at Rs 300 per m2
find the cost of painting

Ammar Syed · Accepted Answer

four cubes means that the length will increase
thus length=(5+5+5+5)= 20cm, breadth= 5cm, height= 5cm
therefore it forms a cuboid we need to find the TSA or the total
surface area
TSA of a cuboid = 2(lb+lh+bh)
=2(20 * 5 + 20 * 5 + 5 * 5)
=2(100+100+25)
=2 * 225
=450 sq cm
10000 sq cm = 1sq m
450 sq cm = 0 045sq m
cost of painting= 300 * 0 045
= Rs 13 5
hope the answer is right and sorry for any mistake if found

four cubes of edges 5cm are placed side by side and stuck together. if the outer surface alone is painted at Rs.300 per m2. find the cost of painting.