Surface area of a coin: the $1 coin depicts sacagawea and her infant son. the diameter of the coin is 26.5 mm, and the thickness is 2.00 mm. find the surface area of the coin to the nearest hundredth.

Answer

Find the volume of the coin is cubic millimeters.

To prove

Formula

Where r is the radius and h is the height .

As given

The $1 coin depicts Sacagawea and her infant son.

The diameter of the coin is 26.5 mm, and the thickness is 2.00 mm.

Radius = 13.25 mm

Put in the formula

Volume  of  coin  = 3.14 × 13.25 × 13.25 × 2.00

                            = 1102.53 mm³ (approx)

Therefore the volume of the coin is 1102.53 mm³ .