Question

A solid rectangular piece of iron measures 1.05 m X 70 cm X 1.5 cm. 1 cm3 of iron weighs
8 grams. Find the weight of this piece in kilograms?

Answer 1

here is a complete and simple solution to your answer buddy:

L = 1.05 m= 105 cm

B= 70 cm

H= 1.5 cm

therefore, Vol = 105 * 70 * 1.5 = 11025 cm3

The weight of 1 cm3 of iron plate is 8 gram

Therefore, the weight of 11025 cm3 of iron plate is = 11025 * 8 = 88200 grams.

weight in Kg = 88200/1000 = 88.2 kg.

Answer 2

volume of solid rectangular piece of iron=lbh

=1.05×1.5×70

=740.25cm^3

1cm^3=8g=0.008kg

740.25cm^3=740.25×0.008

=5.922kilo gram