a circle with a radius of 3cm sits inside a circle with a radius of 7cm. What is the area of the shaded region? Round your final answer to the nearest hundredth.
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Answered by
11
The area of circle = pie r square.
The area of the shaded region = the area of the circle with radius 7 cm - the area of the circle with radius 3 cm
= 154 - 28.285
= 125.714.
Mark me as the brainliest please.
The area of the shaded region = the area of the circle with radius 7 cm - the area of the circle with radius 3 cm
= 154 - 28.285
= 125.714.
Mark me as the brainliest please.
Answered by
23
Answer:
Area of shaded portion = 125.6 cm²
Step-by-step explanation:
The radius of the smaller circle is given to be = 3 cm
Area of the circle is given by : Area = π·radius²
⇒ Area of the smaller circle = π × 3²
= 3.14 × 9
= 28.26 cm²
The radius of the bigger circle is given to be = 7 cm
⇒ Area of the bigger circle = π × 7²
= 3.14 × 49
= 153.86 cm²
Now, Area of the shaded portion = Area of bigger circle - Area of smaller circle
⇒ Area of shaded portion = 153.86 - 28.26
= 125.6 cm²
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