Question

The weight (in kg) of cubical block of ice 75 cm in length (if one cubic metre of ice weight is 80 kg) is

(1) 35

(2) 42.50

(3) 33.75

(4) 40

Answer 1

Answer: The weight = 33.75kg

Explanation:

Given that

one cubic metre of ice weight is 80 kg

which is mathematically written as

1m³ of ice = 80 kg

Therefore 75 cm length of cubical block of ice =???

First

changing 75 cm to meters, we have 75/100 = 0.75 m

Volume of block = l³= 0.75³ = 0.421875m³

Given that

1m³ = 80kg

0.421875m³= 0.421875 x 80

= 33.75kg