The area of a circle is 1386 cm2. What is the radius of the circle? [Use π= 22/7]
Question
The area of a circle is 1386 cm². What is the radius of the circle?
[Use π= ]
Solution
Sure, here's how you can find the radius of the circle:
Step 1: Write down the formula for the area of a circle, which is A = πr², where A is the area and r is the radius.
Step 2: Substitute the given area and the value of π into the formula. So, 1386 = (22/7) * r².
Step 3: Solve the equation for r². To do this, divide both sides of the equation by (22/7) to get r² = 1386 * (7/22) = 441.
Step 4: Take the square root of both sides to solve for r. The square root of 441 is 21.
So, the radius of the circle is 21 cm.
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