3 years ago

What is 3/20 written as a percent?

Mathematics

2 answers:

Mariulka [41]3 years ago

8 0

Answer is provided in the image attached.

alex41 [277]3 years ago

6 0

Express it as a decimal.

3/20 = 0.15 by division

then move the decimal point twice to the right and affix the percent symbol

thus, 15%.

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A circle's radius is increased by 10%. By what percentage does its area increase

Vladimir79 [104]

Answer: 21%

Explanation: Let the radius of the circle =R therefore area of the circle = [pi][R * R]
Radius of the circle after 10% increase =R+10% of R=R+R/10=11R/10
Therefore AREA of the circle with radius 11R/10 =[pi][11R/10*11R/10]=[pi][121R*R/100] Hence INCREASE in the AREA of the circle=[pi][121R*R/100]-[pi][R*R] =[pi] [R*R][121/100-1] =[pi][R*R][121-100]/100=[pi][R*R][21]/100 THEREFORE % increase in the area of the circle=[pi][R*R][21/100]/[pi][R*R] whole multiplied by 100=21 HENCE increase in the area of the circle =21% NOTE : pi is a constant whose value=22/7

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3 years ago

What is 20% of 120, work it out

Kruka [31]

Answer:

Step-by-step explanation:

0.2 * 120 = 24

also, 120% of 20 = 24

8 0

2 years ago

Read 2 more answers

Please answer the following with Explaination