wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If the height of a sphere is 20 cm, then the total surface area of the sphere is

A
800πcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1600πcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
400πcm2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
600πcm2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 400πcm2
Let r be the radius of the sphere.

Since, height of the sphere is 20 cm.
2r=20cm
r=10cm
∴ TSA of sphere =4πr2
=4π×(10)2
=400πcm2
Hence, the correct answer is option (c).

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Surface Area of Solids
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon