Answer:
144
Step-by-step explanation:
(6(2))(4)
aka (6*6)*4=144
15.00-5.00-2.00-2.00= $6.00
<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em>
<em>H</em><em>ope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>helpful</em><em> </em><em>to</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em>
<h3>
<em>Good</em><em> </em><em> </em><em>luck</em><em> </em><em>on </em><em>your</em><em> </em><em>as</em><em>signment</em></h3>
<em>-pragya~</em><em>~</em>
Answer:
a)
, b)
, c) ![\delta = 1.9\,\%](https://tex.z-dn.net/?f=%5Cdelta%20%3D%201.9%5C%2C%5C%25)
Step-by-step explanation:
a) The area of the circular disk is modelled after this expression:
![A = \pi \cdot r^{2}](https://tex.z-dn.net/?f=A%20%3D%20%5Cpi%20%5Ccdot%20r%5E%7B2%7D)
The total differential is given by the following formula:
![\Delta A = 2\pi r \cdot \Delta r](https://tex.z-dn.net/?f=%5CDelta%20A%20%3D%202%5Cpi%20r%20%5Ccdot%20%5CDelta%20r)
The maximum absolute error in the calculated area of the disk is:
![\Delta A = 2\pi \cdot (21\,cm)\cdot (0.2\,cm)](https://tex.z-dn.net/?f=%5CDelta%20A%20%3D%202%5Cpi%20%5Ccdot%20%2821%5C%2Ccm%29%5Ccdot%20%280.2%5C%2Ccm%29)
![\Delta A \approx 26.389\,cm^{2}](https://tex.z-dn.net/?f=%5CDelta%20A%20%5Capprox%2026.389%5C%2Ccm%5E%7B2%7D)
b) The relative error is given by:
![r_{A} = \frac{\Delta A}{A}](https://tex.z-dn.net/?f=r_%7BA%7D%20%3D%20%5Cfrac%7B%5CDelta%20A%7D%7BA%7D)
![r_{A} = \frac{26.389\,cm^{2}}{\pi \cdot (21\,cm)^{2}}](https://tex.z-dn.net/?f=r_%7BA%7D%20%3D%20%5Cfrac%7B26.389%5C%2Ccm%5E%7B2%7D%7D%7B%5Cpi%20%5Ccdot%20%2821%5C%2Ccm%29%5E%7B2%7D%7D)
![r_{A} \approx 0.019](https://tex.z-dn.net/?f=r_%7BA%7D%20%5Capprox%200.019)
c) The percentage error is:
![\delta = r_{A}\times 100\,\%](https://tex.z-dn.net/?f=%5Cdelta%20%3D%20r_%7BA%7D%5Ctimes%20100%5C%2C%5C%25)
![\delta = 0.019 \times 100\,\%](https://tex.z-dn.net/?f=%5Cdelta%20%3D%200.019%20%5Ctimes%20100%5C%2C%5C%25)
![\delta = 1.9\,\%](https://tex.z-dn.net/?f=%5Cdelta%20%3D%201.9%5C%2C%5C%25)