Question

please help me to solve these questions

Answer 1

Just calculate it's (Lateral surface area + Area of base)x12

Answer 2

Given length = 20m.

Given breadth = 15m.

Given height = 4m.

We know that Area of floor = length * breadth

                                              = 20 * 15

                                              = 300m^2.


We know that Area of 4 walls = 2h(l + b)

                                                  = 2 * 4(20 + 15)

                                                   = 8(35)

                                                   = 280m^2.


Total area of swimming pool = 300 + 280

                                                 = 580 m^2.



Hence cost of cementing the floor = 580 * 12

                                                           = 6960.


Therefore the cost of cementing its floor = 6960.


Hope this helps!