The sum of circumference and the radius of a
circle is 51 cm. Find the radius of circle.
Answers
Answered by
3
Hey!
_________________________
Circumference + Radius= 51
Circumference of circle = 2πr
2×3.14×r
= 6.28r cm
We know, circumference+ radius=51
6.28 r+ r= 51
r(2π+1) =51
r= 51/(2π+1)
π= 3.14
r= 51/(2×3.14+1)
r= 51/7.28
r= 7.005 cm
__________________________
Hope it helps...!!!
Answered by
4
Step-by-step explanation:
Sum of circumference and radius = 51 cm.
Find radius = (?)
→ circumference + radius = 51
∴2πr+r=51
∴r(2π+1)=51
∴r=
2π+1
51
=
2×
7
22
+1
51
=
7
44+7
51
=
51
51×7
∴r=7cm
Similar questions