Convert the percentage into a decimal
![50 * .20 = 10](https://tex.z-dn.net/?f=50%20%2A%20.20%20%3D%2010)
![50 - 10 = 40](https://tex.z-dn.net/?f=50%20-%2010%20%3D%2040)
20% of 50 is 40
Answer:
<h3>
33.3%</h3>
Step-by-step explanation:
Using the formula for calculating simple interest as shown;
Simple Interest = Principal * Rate *Time/100
Principal = Cost of tablet = $1500
Interest after one year = $1500-$1000 = $500
Time = 1year
Substituting this values into the formula;
![500 = 1500*rate*1/100\\Cross\ multiplying\\50,000 = 1500 * rate\\Rate = 50,000/1500\\Rate = 33.3%](https://tex.z-dn.net/?f=500%20%3D%201500%2Arate%2A1%2F100%5C%5CCross%5C%20multiplying%5C%5C50%2C000%20%3D%201500%20%2A%20rate%5C%5CRate%20%3D%2050%2C000%2F1500%5C%5CRate%20%3D%2033.3%25)
The interest rate that her parents assumed is 33.3%
Answer:
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Total surface area= 2πrh
=2*22/7*5*8
=251.4cm²
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