Question

a boy builds a cuboid measuring 6cm,by 12 cm by 15 cm.how many of the cuboids are required to make perfect cube

Answer 1

finding their LCM we can get 60 Soto get a perfect cube we need all the dimensions 60cm
L=6cm
B=12cm
h=15cm

to make 60 cm length we need 10 cuboids
and 5 to make breadth 60cm
and 4 to make height 60cm

so total cubes required=10*5*4=200cuboids





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Answer 2

Answer:

A boy builds a cuboid measuring 6cm by 12 cm by 15 cm. How many of these cuboids are required to make a cube ?

Given :–

Length = 6 cm

Breadth = 12 cm

Height = 15 cm

To Find :–

How many of these cuboids are required to make a cube ?

Solution :–

First we have to find the L.C.M. of length, breadth & height.

★ L.C.M. refers to the attachment ★

L.C.M. = 60

• We need 10 cuboids for make length 60cm.

• We need 5 cuboids for make breadth of 60cm.

• We need 4 cuboids for make height of 60cm.

So,

Total cubes required = 10 × 5 × 4

→ 10 × 20

→ 200 cuboids

Hence,

200 cuboids are required to make a cube.