AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

The area of the circular playground is 22176.cm2 . Find the cost of fencing this

ground at the Rate of Rs. 50o per meter.

Class: Grade 9

Subiect : Mathematics

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

262

384

264

348

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The rate of ground is 50 per meter. Question Image

Area of the Circular playground is 22176 cm2
The Area A of the circle with radius r is given by
A =

π

r2
Substituting the value of A as 22176 cm2 Calculating the value of r as:
22176 =

\frac{22}{7}

{2^{}}^{}

\frac{22176 \times 7}{22}

=r2
1008

\times 7

=r2
7056=r2
r=

\sqrt{7056}

r=84 cm
The length of Circumference c of the circle is
c=2

πr

Value of r as 84 cm
c=2

\times \frac{22}{7} \times 84

c=528
The length of fence in meter is 5.28 cm
5.28

\times

50
=264 m

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

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

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!