The circumference of the circle exceeds the diameter by 90 cm find the radius diameter and circumference of the circle
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Answer:
r=21 cm; D=42 cm; C=132 cm
Step-by-step explanation:
Circumference of circle = 2πr = πD ∵[D = 2r]
Circumference exceeds Diameter by 90
πD = 90+D
(22/7)×D = 90+D
22D = 7(90+D)
22D = 630 + 7D
D = 42 cm
Radius (r) = 42/2 = 21 cm
Circumference = πD = (22/7)×(42)
= 132 cm
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