Question

A plate on square base made of brass is of length
x cm and width 1 mm. The plate weighs 4725 gm. If
1 cubic cm of brass weighs 8.4 gram, then the value
of x is :​

Answer 1

Answer:

Step-by-step explanatio00000n:

Given

length =x cm

width = 1 mm or 0.1cm

breadth = x cm

1 cubic cm of brass has weight = 8.4 g

total weight = 8.4 × x² × 0.1

= 0.84x²gram

As given

weight of the plate = 4725 grams

⇒ 0.84x² = 4725

x² = 4725/0.84

x² = 5625

x = √5625

x = 75 cm