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Chapter 12: Q25. (page 479)

A brick with dimensions 20 cm, 10 cm and 5 cm, weighs 1.2 kg. A second brick of the same material has dimensions 25 cm, 15 cm and 4 cm. What is its weight?

Short Answer

Expert verified

The weight is1.8鈥夆赌塳驳 .

Step by step solution

01

Step 1. Given information.

Dimensions of brick are 20 cm, 10 cm and 5 am and weighs 1.2 kg.

Dimensions of second brick are 25 cm, 15 cm and 4 cm.

02

Step 2. Determine the weight.

Firstly, find the volume of the first brick,

v1=20脳10脳5=1000

For the 1鈥夆赌塩尘3, weight of material

1000cm3=1.2kg1cm3=0.0012kg[divide]

Now, find the volume of another brick.

v2=25脳15脳4=1500

Then, the weight of the brick is

1500脳0.0012鈥夆赌塳驳=1.8鈥夆赌塳驳

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