If the surface area of a sphere is 616 cm², its diameter (in cm) is:

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
If the surface area of a sphere is 616 cm², its diameter (in cm) is:

1 7

2 14

3 21

4 56

Ans.
(2)

$4 π r^{2} = 616 \Rightarrow r^{2} = 616 \times \frac{1}{4} \times \frac{7}{22} = 49 \Rightarrow r = 7 cm Diameter = 2 r = 2 \times 7 = 14 cm$

Want Us to Email you About Special Offers & Updates?