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

The lateral surface area of a right circular cone of height 28 cm and base radius 21 cm is:


A

2110 cm2

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

2310 cm2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

1155 cm2

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

1055 cm2

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

2310 cm2


Given, h = 28 cm; r = 21 cm

Therefore, slant height (l) = 282+212

= 35 cm

Lateral surface area = πrl

= 227 × 21 × 35

= 2310 cm2


flag
Suggest Corrections
thumbs-up
13
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon