Question

plzz tell me this question

Answer 1

Daniel is painting the walls and ceiling... so the area to find is=area of walls+ area of ceiling
area=CSA of cuboid + area of top of cuboid
area=2h(l+b) + 2(l+b)

area= 2*7(15+10) + 2*(15+10)
area=14(25) + 50
area= 350+50
area= 400 sq m

1 can of paint is used per 100 sq m

no of cans used=400/100

no of cans used is 4.