Question : The area of a circle is 1386 cm². What is the radius of the circle? [Use $\pi=\frac{22}{7}$ ]
Option 1: 21 cm
Option 2: 7 cm
Option 3: 14 cm
Option 4: 18 cm

Question

Question : The area of a circle is 1386 cm². What is the radius of the circle? [Use $\pi=\frac{22}{7}$ ]

Option 1: 21 cm

Option 2: 7 cm

Option 3: 14 cm

Option 4: 18 cm

Team Careers360 · Accepted Answer

Correct Answer: 21 cm

Solution : Given: The area of a circle = 1386 cm²
Also, the area of a circle = $\pi r^2$, where $r$ is the radius of the circle.
⇒ $1386=\frac{22}{7} imes r^2$
⇒ $r^2 = 63 imes7 $
⇒ $r=21$
Hence, the correct answer is 21 cm.

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Question : The area of a circle is 1386 cm2. What is the radius of the circle? [Use π=227 ]Option 1: 21 cmOption 2: 7 cmOption 3: 14 cmOption 4: 18 cm

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Question : The area of a circle is 1386 cm². What is the radius of the circle? [Use $π = \frac{22}{7}$ ]
Option 1: 21 cm
Option 2: 7 cm
Option 3: 14 cm
Option 4: 18 cm