Question

If the diameter is 28cm. Find the Radius and Circumference. *

(1) R= 10cm , C= 80cm

(2) R= 14cm , C= 88cm

(3) D= 14cm , C= 88cm




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Answer 1

QUESTION

If the diameter is 28cm. Find the Radius and Circumference. *

(1) R= 10cm , C= 80cm

(2) R= 14cm , C= 88cm

(3) D= 14cm , C= 88cm

ANSWER

$Diameter = 28 cmRadius = diameter/2 = 28/2 = 14 cmArea of circle = Π r ² = ( 22/7 ) x (14)² = ( 22/7 ) x 14 x 14 = 22 x 2 x 14 = 44 x 14 = 616 cm²$