1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards
  3. CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic
Check sibling questions

Question 17 - CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 16, 2024 by Teachoo

If area of quadrant of a circle is 38.5 cm 2 then find its diameter

(use 𝜋 = 22/7)

Transcript

Question 17 If area of quadrant of a circle is 38.5 cm2 then find its diameter (use 𝜋 = 22/7) We know that Area of quadrant = 1/4× Area of circle Area of quadrant = 1/4 × πr2 Putting values 38.5 = 1/4 × 22/7 × r2 385/10 = 1/4 × 22/7 × r2 385/10 × 4/1 × 7/22 = r2 35/10 × 4/1 × 7/2 = r2 35/10 × 2 × 7 = r2 490/10 = r2 49 = r2 r2 = 49 r = √49 r = 7 So, Radius = r = 7cm Diameter = 2r = 2 × 7 = 14 cm
  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

    3. CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic

    CBSE Class 10 Sample Paper for 2019 Boards →
CBSE Class 10 Sample Paper for 2019 Boards →
Class 10
Solutions of Sample Papers for Class 10 Boards

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo