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प्रश्न
Circumference of a circle disc is 88 cm. Its radius is ______.
विकल्प
8 cm
11 cm
14 cm
44 cm
उत्तर
Circumference of a circle disc is 88 cm. Its radius is 14 cm.
Explanation:
We know that, circumference = 2πr
⇒ 88 = `2 xx 22/7 xx r`
⇒ r = `(88 xx 7)/(2 xx 22)` ......[∵ Circumference = 88 cm, given]
⇒ r = 14 cm
Hence, the radius is 14 cm.
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