# Find the value of x. If 1 cubic cm of brass weighs 8.4 gram

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:

- 72
- 74
- 75
- 76

**Answer: (3) 75**

**Explanation:-**TA plate on square base made of brass is of length A x cm and 1 mm.

Then, the length = X cm, wide = X cm and width = 1 mm = 0.1 cm

1 cubic cm of brass weight = 8.4 gram

Therefore, 4725 gram = 4725/8.4 cubic cm

= 562.5 cubic cm

Then, the volume of a plate = 562.5 cubic cm X x X x 0.1

Square of X = 562.5/0.1

Square of X = 5625

Square root on both side,

X = 75 cm

Then, the value of X is 75 cm.

Hence, the answer is (3) 75 cm.