Question

a metal cuboid is of dimensions 50 cm, 1 0 cm and 20 CM .if the weight of 1 cubic CM of the metal is 8 grams .
find the weight of the metal cuboid in kilogram

Answer 1

First find the volume of the cuboid :-
l * b * h
= 50 * 10 * 20
= 10000 cubic cm.
1 cubic cm = 8 grams
10000 cubic cms. = 8 * 10000
= 80000 grams
grams into kilograms = grams/1000
80000/1000
Ans = 80 kg.

Answer 2

volume metal cuboid= 50×10×20
= 10000cm^3
therefore, 1 cubic centimeter = 8 grams
so, 10000×8 = 80000grams
therefore, weight of metal cuboid in kg
80000÷1000=80 kg
with weight of metal cuboid is 80kg