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Sergio [31]
3 years ago
13

Small circular disks are being cut from thin sheets of steel. The steel weighs 1.6 grams per square centimeter. The disks need t

o 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.
Mathematics
1 answer:
Nadya [2.5K]3 years ago
8 0

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

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<img src="https://tex.z-dn.net/?f=T%3D2%5Cpi%20%5Csqrt%7Bl%2Fg%7D" id="TexFormula1" title="T=2\pi \sqrt{l/g}" alt="T=2\pi \sqrt{
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The correct answer is Option A

[△SRT]

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