Question

Small circular disks are being cut from thin sheets of steel. The steel weighs 1.6 grams per square centimeter. The disks need to have a diameter of 5 centimeters.
(A) find the area of the disk to the nearest hundredth of a square centimeter. Show the steps in your calculation.

Answer 1

Answer:

$A = 19.63cm^2$

Step-by-step explanation:

Given

$d =5cm$

$Weight = 1.6g/cm^2$

Required

The area (A) of the disk

This is calculated as:

$A = \frac{\pi * d^2}{4}$

So, we have:

$A = \frac{3.14 * 5^2}{4}$

$A = \frac{3.14 * 25}{4}$

$A = \frac{78.5}{4}$

$A = 19.625$

$A = 19.63cm^2$ --- approximated