Question

8. A side of cube is 12cm. Such three solid cubes are melted to form a cuboid
If the base area of the cuboid is 144 sq.cm then what is the height of that
cuboid? (choose two correct option]
(1) 36cm
(3) 12cm
(2) 0.36m
(4) 0.12m​

Answer 1

Answer:-

(2) 12 cm

Explanation:-

It is given that the side of cube is 12 cm. If we connect 3 such cubes we will see that the length of the cuboid will be tripled but its breadth and height will remain the same. Hence, its height is 12cm.

Answer 2

Answer:

1) 36cm

Step-by-step explanation:

v.of .cube=v.of .cuboid eq 1

a^3=l×b×h

gn:

cube a=12cm. cuboid l×b= 144

3 cubes ,

v.of one cube=1728

". ". 3. ". =1728×3

=5184

by eq 1

5184=l×b×h

5184=144×h

5184÷144=h

h=36