meerah9 meerah9

16-02-2018
Mathematics

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Find the area and the perimeter of a quadrant of a circle with radius 4m correct to 3 significant figures

Find the area and the perimeter of a quadrant of a circle with radius 4m correct to 3 significant figures class=

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Аноним Аноним

16-02-2018

area of a quarter circle = 1/4 * pi * r^2

= 1/4 * pi * 4^2 = 12.6 m to 3 sig figs.

perimeter = 4 + 4 + 1/4 * 2 pi * 4 = 14.3 to 3 sig figs.

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