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A sumo wrestling ring is circular and has a circumference of 
4.6 pi meters.
What is the area 
A of the sumo wrestling ring in square meters? Give your answer in terms of 
pi.

A sumo wrestling ring is circular and has a circumference of 4.6π 4.6 \pi meters.\newlineWhat is the area A A of the sumo wrestling ring in square meters? Give your answer in terms of π \pi .\newlineA= A=\square m2\mathrm{m}^{2}

Full solution

Q. A sumo wrestling ring is circular and has a circumference of 4.6π 4.6 \pi meters.\newlineWhat is the area A A of the sumo wrestling ring in square meters? Give your answer in terms of π \pi .\newlineA= A=\square m2\mathrm{m}^{2}
  1. Circle Circumference Formula: The circumference CC of a circle is given by the formula C=2×π×rC = 2 \times \pi \times r, where rr is the radius.
  2. Calculate Radius: Given the circumference is 4.6π4.6 \pi meters, we can set up the equation 4.6π=2×π×r4.6 \pi = 2 \times \pi \times r to find the radius.
  3. Circle Area Formula: Divide both sides by 2π2 \pi to solve for rr: r=4.6π2π=2.3r = \frac{4.6 \pi}{2 \pi} = 2.3 meters.
  4. Substitute Radius: The area AA of a circle is given by the formula A=πr2A = \pi \cdot r^2.
  5. Calculate Area: Substitute r=2.3r = 2.3 meters into the area formula: A=π×(2.3)2A = \pi \times (2.3)^2.
  6. Calculate Area: Substitute r=2.3r = 2.3 meters into the area formula: A=π×(2.3)2A = \pi \times (2.3)^2.Calculate the area: A=π×5.29A = \pi \times 5.29 square meters.

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