bootywarrior1869 bootywarrior1869

10-08-2017
Mathematics

contestada

What is the estimated perimeter of an ellipse if the major axis has a length of 15 ft and the minor axis has a length of 7.5 ft? Round your answer to the nearest tenth. A. 36.7 ft B. 37.3 ft C. 25.7 ft D. 24.2 ft

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musiclover10045 musiclover10045

10-08-2017

P = 2*pi*sqrt(a^2 +b^2/2 =

2 *3.14 * sqrt(15/2^2 +7.5/2^2/2 =

6.28 x sqrt(56.25+14.0625/2

6.28 *sqrt(35.15625)

6.28 * 5.929270613= 37.235

answer is B 37.3 feet

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