The area of a circular plate is 154 cm square. Find the
a) radius of the circle
b) circumference of the circle (use = 22/7)
Answers
Answered by
15
Answer:
(a)7;(b)44
Step-by-step explanation:
THE AREA OF CIRCLE=πr²
154 =22/7*r²
r²=49
⇒r=7.....(a)
(b)CIRCUMFERENCE OF CIRCLE=2πr
=2*22/7*7
=44
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Answered by
8
Answer:
Radius of the circle = 7 cm ; Circumference of the circle = 44 cm
Step-by-step explanation:
Total surface area = 154 cm square
22/7 × r square = 154
r square = 154 × 7/22
r = 49 square
r = 7 cm
Circumference of the circle = 2 × 22/7 × 7
= 44 cm
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