Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

What is the difference between the total surface area and the curved surface area of a cone whose radius is 35 cm? (Take $π =\frac{22}{7}$)

Options:

3850 cm2

3704 cm2

3750 cm2

3675 cm2

Correct Answer:

3850 cm2

Explanation:

We know that,

Curved Surface Area of the cone (CSA) = πrl

Base area = πr2 

Total Surface Area (TSA) - Curved Surface Area of the cone (CSA) = πr2

We have given,

Radius of cone = r = 35 cm

We also know that,

TSA - CSA = Base Area

= πr2 = \(\frac{22}{7}\) x 35 x 35 = 3850