Class 10 Areas related to circles Ex 12.1

NCERT Solutions for Class 10 Areas related to circles Ex 12.1

NCERT Solutions for Maths Chapter 12, Exercise 12.1 involve complete  answers for each question in the exercise 12.1. The solutions provide students a stretegic methods  to prepare for their exam. Class 10 Maths Chapter 12 Areas related to circles Exercise 12.1 questions and answers helps students to perform better in exam and it will  clear doubts definitely. Students will find it extremely easy to understand the questions and learn solving the problems.NCERT Solutions for Chapter 12 Areas related to circles Exercise 12.1 prepared by www.mathematicsandinformationtechnology.com team in very delicate, easy and creative way. 

Question 1:

The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.

Solution 1:

Question 2:

The radii of two circles are 8 cm and 6 cm respectively. Find the radius of the circle having area equal to the sum of the areas of the two circles.

Solution 2:

Question 3:

Given figure depicts an archery target marked with its five scoring areas from the centre outwards as Gold, Red, Blue, Black and White. The diameter of the region representing Gold score is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions.

Solution 3:

Question 4:

The wheels of a car are of diameter 80 cm each. How many complete revolutions does each wheel make in 10 minutes when the car is traveling at a speed of 66 km per hour?

Solution 4:

Question 5:

Tick the correct answer in the following and justify your choice: If the perimeter and the area of a circle are numerically equal, then the radius of the circle is (A)2 units (B) π units (C) 4 units (D) 7 units

Solution 5: