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3 years ago

Calculate the calculate the area of a circle whose diameter is 9 cm and pie is 22/7

Mathematics

2 answers:

Vlad1618 [11]3 years ago

5 0

Answer:

63.64 cm²

Step-by-step explanation:

r = d/2 = 9 / 4 = 4.5

A = πr²

A = (22/7) (4.5)²

A = 63.64 cm² (rounded to the hundredth place)

barxatty [35]3 years ago

4 0

Answer: 63.64 cm² (rounded to the hundredth place)

Step-by-step explanation:

<u>Concept:</u>

Here, we need to understand how to find the area of a circle.

The general formula is: A = πr²

π = 3.14 (or any constants that equals to this value)

r = radius = (1/2) diameter

<u>Solve:</u>

π = 22/7

r = d/2 = 9 / 4 = 4.5

A = πr²

A = (22/7) (4.5)²

A = 63.64 cm² (rounded to the hundredthe place)

Hope this helps!! :)

Please let me know if you have any question

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Calculate the calculate the area of a circle whose diameter is 9 cm and pie is 22/7 ​

Calculate the calculate the area of a circle whose diameter is 9 cm and pie is 22/7