Pllz solve this plz plz
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1
Answer:
Step-by-step explanation:
Circumference of a circle is 2πr
A . 44 = 2πr
44 / 2π = r
44 / 2 × 22/7 = r
44 / 44 / 7 = r
44 × 7 / 44 = 7
Radius = 7cm
B. 132 = 2πr
132 / 2π = r
132 / 2 × 22/7 = r
132 / 44/7 = r
132 × 7/ 44 = 3 × 7 = 21
Radius = 21cm
C. 264 = 2πr
264 / 2π = r
264 / 2 × 22/7 =r
264 / 44 /7 = r
264 × 7/44 = 6 × 7 = 42
Radius = 42 cm.
I hope this helps.
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Answered by
0
Answer:
(a) r = 7 (b) r = 21 (c) r = 42
Step-by-step explanation:
Circumference of a circle= 2πr
a) 44=2πr
⇒ 44 = 2 x x r
⇒ 44 = x r
⇒ r = x 7
⇒∴ r = 7
b) 132 = 2πr
⇒ 132 = 2 x x r
⇒ 132 = x r
⇒ x 7 = r
⇒ r = 7x3
∴ r = 21
c) 264 = 2πr
⇒ 264 = x r
⇒ r = x 7
⇒ r = 6 x 7
∴ r = 42
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