area of circle is 1386 centimetres square find its circumference
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Answered by
3
Hey there !!
Area of circle = 1386
22/7 × r^2 = 1386
= r^2 = 1386×7/22
= r = 21
Circumference of circle = 2πr
=> 2 × 22/7 × 21×
=> 132 cm^2
Hope this helps u
Area of circle = 1386
22/7 × r^2 = 1386
= r^2 = 1386×7/22
= r = 21
Circumference of circle = 2πr
=> 2 × 22/7 × 21×
=> 132 cm^2
Hope this helps u
Dnyanesh:
Circumference=2πr
Answered by
0
Answer:
Step-by-step explanation:
Length of tangent = x
Radius =9cm
Distance to the tangent from contre = 15cm.
From the figure :-
(Distance from the centre)²=radius²+length of tangent²
15²-9²=length of tangent²
225-81=length of tangent ²
Length of tangent =√144=12cm .
Therefore,The length of from a point 15cm away from the centre of circle of radius 9cm is 12cm
Read more on Brainly.in - https://brainly.in/question/1942955#readmore
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