The radius of a cylindrical box is 8 cm and the height is 3cm. The number of inches that may be added to either the radius or the height to give the same non-zero increase in volume is:
A
1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
513
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
any number
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
non-existent
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
none of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B513 Since V=πr2h, we must have π(r+x)2h=πr2(h+x). ∴x=(r2−2rh)/h.