Question

) Find the area of a circle with radius, r = 53cm.

Give your answer rounded to 3 SF.

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Answer 1

Area of a circle = pi r^2
= 3.14 x 53^2
= 3.14 x 2809
Area of circle = 8820.26 cm^2

Therefore area of circle to 3 significant figures is 8820 cm^2