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Mathematics 22 Online
OpenStudy (anonymous):

The figure shows a right triangle AEB on a rectangle CBED. What is the length of side AD? A.36.21 cm B.45.32 cm C.81.96 cm D.94.38 cm

OpenStudy (anonymous):

OpenStudy (anonymous):

30√3 + 30

OpenStudy (anonymous):

You just use the ratios for 30-60-90 and 45-45-90 ratios.

OpenStudy (anonymous):

can you explain please

OpenStudy (anonymous):

Sure. A rectangle has 2 pairs of congruent sides. Therefore, the other side is 30. Then, using the 30-60-90 ratio, the other side length in a rectangle is 30√3. Then, the 45-45-90 ratio makes it 30 for the other side of the other quadrilateral.

OpenStudy (anonymous):

what is the answer because im not sure if its A or B

OpenStudy (anonymous):

Neither. It's C. 30√3 is approximately 51.96. Then you add 30.

OpenStudy (anonymous):

okay thanks for helping

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