Find the circumference of the inner and the outer circles, shown in the adjoining figure. (Take π=3.14)

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

56.52m, 119.32 m

66.52m, 119.32 m

56.52m, 129.32 m

66.52m, 129.32 m

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Concept: Given;
Radius of outer circle = 19 cm
Thickness= 10 m
Thus the radius of the inner circle= Outer radius – thickness
= 19-10
= 9m
Now we will apply the formula of circumference.
Circumference of inner circle= ${"mathml":"<math class="image_resized" style="width:192px;height:11px"><span style="font-family:$ Circumference of the outer circle ${"mathml":"<math class="image_resized" style="width:228px;height:11px"><span style="font-family:$ Hence, the correct answer is option 1.

Watch 3-min video & get full concept clarity

hear from our champions

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET