Skip to main content

Class 10 Maths Chapter 12 Areas Related to Circles Ex 12.1

Question 1.
The radii of the two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has a circumference equal to the sum of the circumferences of the two circles.
Solution:
Ex 12.1 Class 10 Maths NCERT Solutions PDF Q1
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:
Exercise 12.1 Class 10 Maths NCERT Solutions PDF Q2

Question 3.
The given figure depicts an archery target marked with its five scoring regions from the center outwards as Gold, Red, Blue, Black, and White.
NCERT Solutions for Class 10 Maths Chapter 12 PDF Areas Related To Circles Ex 12.1
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:
Exercise 12.1 Class 10 Maths NCERT Solutions PDF Q3
Exercise 12.1 Class 10 Maths NCERT Solutions PDF Q3.1

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 travelling at a speed of 66 km per hour?
Solution:
Ch 12 Maths Class 10 NCERT Solutions Ex 12.1 PDF Q4
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) n units
(c) 4 units
(d) 7 units
Solution:
Ex 12.1 Class 10 Maths NCERT Solutions PDF Q5

Comments

Post a Comment

Popular posts from this blog

GRAMMAR:-CONJUNCTION EXERCISES WITH ANSWERS SHEET-2

1. ______, you've got a chance, you might as well make full use of it. (A) Now that (B) After (C) Although (D) As soon as 2. She has not spoken to us _____ we had the argument. (A) as (B) so (C) while (D) since 3. _____ you refuse to pay the ransom, the kidnappers might hurt the child. (A) Lest (B) Unless (C) If (D) Or else 4. _____ he was about to fall asleep the telephone rang. (A) As (B) Since (C) Unless (D) So that 5. _____ the couple goes, their children follow them. (A) When (B) Where (C) If (D) Wherever 6. Father locked the garage door _____ no one could tamper with the car. (A) because (B) so that (C) for (D) lest 7. It was only when I reread his po...
Post a Comment
Read more

Force

What is Force? Force can be defined as a push or a pull that changes or tends to change the state of rest or uniform motion of an object or changes the direction or shape of an object.  It causes objects to accelerate or add to their overall pressure. In simple terms, it is a push or a pull on an object that takes place when two objects interact. It is the basic cause of motion from rest. Unit of Measurement It is measured in ‘Newton’ (N). Newton measures the force needed to move, accelerate or speed up objects. The basic formula for it is, F = m.a, where, ‘m’ stands for the mass in kilograms and ‘a’ stands for acceleration in m/sec 2 .  It may also be measured in Pounds. Force is a Vector Quantity Types of Forces There are different types of forces in the Universe. Based on the nature of the interaction between two bodies, they  can be classified into two main categories viz. Contact Forces. Non-Contact Forces (Field Forces or Action at a D...
Post a Comment
Read more

Class 10th Ch-1 First Flight A Letter To God

Oral Comprehension Check What did Lencho hope for? Answer:- Lencho hoped for rains as the only thing that his field of ripe corn needed was a shower.   Why did Lencho say the raindrops were like ‘new coins’? Answer:-Lencho’s crops were ready for harvest. As raindrops would have helped in getting a better harvest, resulting in more prosperity, so Lencho compared them with new coins. How did the rain change? What happened to Lencho’s fields? Answer :-The rain was pouring down. But suddenly, a strong wind began to blow and very large hailstones began to fall along with the rain. All the crop in Lencho’s fields destroyed. What were Lencho’s feelings when the hail stopped? Answer :-After hail stopped, Lencho’s soul was filled with sadness. He could see a bleak future for him and his family. Hew was worried aboutlack of food for the coming year. Page No: 6 Oral Comprehension Check Who or what did Lencho have faith in? What did he do? Answer :-Lencho had faith in God. He believed that God...
Post a Comment
Read more