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Find the circumference of the circle given.

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1 answer:

stiv31 [10]4 years ago

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pls explain the question

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A triangle PQR is right angled at R, with PQ=80cm and R=60cm. find QR? pythagorus theorem

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Answer:

Solution given:

A triangle PQR is right angled at R, with hypotenuse{h}PQ=80cm

and

base[b]PR=60cm.

perpendicular [P]= QR

by using Pythagoras law

h²=p²+b²

80²=QR²+60²

QR²=80²-60²

QR= $\sqrt{2800}$

QR=20 $\sqrt{7}$ =52.9=53cm

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Answer:

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