Question

the length, breadth and height of a wall are 25m 15m and 5m respectively. find the cost of renovating its floor and four walls at the rate of rs. 80 per meter square​

Answer 1

Answer:

Step-by-step explanation:

the lateral surface area of a cuboid = 2h ( l + b )

=2 x 5 (25  +  15)

=10 x 40

=400 sq .m

here the lateral surface(400 sq m) are is the area of the walls

now the area of floor = l x b

=15 x 25

=375 sq m

now the total area for renovationg =400+375

=775 sq m

total cost is

=775 x 80

=62000 rs