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Find the area and the circumference of a circle with radius 3km. Write your answers in terms of pi, and be sure to include the correct units in your answers.

Find the area and the circumference of a circle with radius 3 km 3 \mathrm{~km} .\newlineWrite your answers in terms of π \pi , and be sure to include the correct units in your answers.

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Full solution

Q. Find the area and the circumference of a circle with radius 3 km 3 \mathrm{~km} .\newlineWrite your answers in terms of π \pi , and be sure to include the correct units in your answers.
  1. Calculate Area of Circle: Calculate the area of the circle using the formula A=πr2A = \pi r^2, where rr is the radius.\newlineArea = π×(3 km)2=9π km2\pi \times (3 \, \text{km})^2 = 9\pi \, \text{km}^2.
  2. Calculate Circumference of Circle: Calculate the circumference of the circle using the formula C=2πrC = 2\pi r.\newlineCircumference = 2×π×32 \times \pi \times 3 km = 6π6\pi km.

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