Question

Find the area of the circle below. A = pi r^2 (leave in terms of pi)

Answer 1

• Radius (r) = 3xy^3
• We know, area of a circle = πr^2
• Therefore,

$\pi \: {(3xy}^{3} ) ^{2} \\ = \pi \times {3}^{2} \times {x}^{2} \times {y}^{3 \times 2} \\ = 9\pi {x}^{2} {y}^{6}$

Answer:

$9\pi {x}^{2} {y}^{6}$

Hope you could understand.

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