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

A circus is to be erected in the form of a cone surmounted on a cylinder. The total height of the tent is 49m. Diameter of the base is 42m and the height of the cylinder is 21m21m. Find the cost of canvas needed to make the tent, if the cost of canvas is Rs. 12.50/m2Rs. 12.50/m2. (Take π = $\frac{22}{7}$ ).

Chapter/Topic: Surface areas and volumes

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

43525

53525

63578

63525

answer is D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Cylinder:

Diameter =42 m , Radius (r)=21 m
Height (h)=21 m
Curved Surface area of Cylinder =2πrh

m^{2}

=2×

\frac{22}{7}

×21×21
=2772

m^{2}

Cone:
Radius (r)=21 m, Height (h)=28 m
l=

\sqrt{h^{2} + r^{2}}

\sqrt{28^{2} + 21^{2}}

\sqrt{1225}

=35 m
Curved surface area of cone =πrl

m^{2}

\frac{22}{7}

×21×35=2310

m^{2}

Total surface area of circus tent=2772+2310=5082

m^{2}

The cost of 1

m^{2}

= Rs. 12.50
Total cost of canvas =5082×12.50= Rs. 63,525
Hence, Option (4) is the correct answer.

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!