Question

Bricks of dimensions 15cm×8cm×5cm are used to build a wall of dimension 20cm×16cm×20cm. how many bricks are used​

Answer 1

Answer:

volume of the brick = 600cm^3

volume of the wall = 6400cm^3

no. of brick =6400/600 = 10

Step-by-step explanation:

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Answer 2

Answer:

We know that volumes of both the shapes will be equal.

So,

15×8×5×x=20×16×20 (Where x shows the number of bricks used)

⇒x=6400/600

⇒x=64/6=10.66.(approx.)

∴10 bricks are used.