Question

14 How many bricks of size 5cm x 2cm x 3cm would a child need to build a rectangular block of dimensions 15cm x 15cm x 10cm?

Answer 1

Step-by-step explanation:

bricks are rectangular Parallelopied Or cuboids

volume= l×b×h

so the number of bricks= (total volume/ volume of each brick) =(15×15×10) /(5×2×3) =75 bricks