Question Bank - Mathematics

Here's the question bank on all the mathematics topics.

Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text
Button Text

If the radius of a sphere is measured as 6 m with an error of 0.02 m, then find the approximate error in calculating its surface area

A.
0.48 square meters
B.
0.96 square meters
C.
1.20 square meters
D.
0.72 square meters

Solution:

Concept:Let the radius of a sphere is r meters,The surface area of Sphere(A) = 4?r2Calculation:Given: Radius of a sphere = 6 m and ?r = 0.02mNow, the volume of the sphere is given by,A = 4?r2Differentiating with respect to r, we get\(\rm = \frac{{{\rm{dS}}}}{{{\rm{dr}}}} = 8? r\)= dS = 8?r?dr= dS = 8??6?(0.02)= dS = 0.96 square meters

For more questions,

Click Here

Download Gyanm App

free current affairs for competitive exams

Scan QR code to download our App for
more exam-oriented questions

free current affairs for competitive exams

OR
To get link to download app

Thank you! Your submission has been received. You will get the pdf soon. Call us if you have any question: 9117343434
Oops! Something went wrong while submitting the form.