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Find mass (in gm) of a gold coin of radius 2 cm and thickness 0.05 cm. (Density of gold 19.3 gm/cm³)
Question

Find mass (in gm) of a gold coin of radius 2 cm and thickness 0.05 cm. (Density of gold 19.3 gm/cm³)

A.

6.1

B.

0.03

C.

0.06

D.

12.1

Correct option is D


Given:
· Radius of the gold coin (r) = 2 cm
· Thickness of the coin (h) = 0.05 cm
· Density of gold (ρ) = 19.3 gm/cm³

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