The area of a round table is 1386cm2. Find the the length of the radius of the table.
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(1) Area = 1386 cm2
πr2=1386⇒227r2=1386⇒r2=441⇒r=21 cm
Circumference = 2πr=2×227×21=132 cm
Hence, the correct answer is option B.
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RADIUS = 21 CENTIMETRES
LENGTH ( CIRCUMFERENCE ) = 132 CENTIMETRES
EXPLANATION IS IN THE PICTURE
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