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

GRAMMAR:-Preposition Exercises with Answers

A preposition is a word placed before a Noun or Pronoun to show its relation to some other word in the sentence. Some examples of prepositions are words like "in", "at", "on", "of", and "to". Prepositions in English are highly idiomatic. Fill the blanks with the suitable prepositions 1) The dog ran ____ the road. 2) The river flows ____ the bridge. 3) The work was done ____ haste. 4) He is afraid ____ the dog. 5) I am fond ____ music. 6) He goes ____ Sunday ____ church. 7) He died ____ his country. 8) The steam-engine was invented ____ James Watt. 9) The burglar jumped ____ the compound wall. 10) The village was destroyed ____ fire. 11) What is that ____ me? 12) It cannot be done ____ offence. 13) He spoke ____ me ____ Urdu. 14) They live ____ the same roof. 15) I have not seen him ____ Wednesday last. 16) I have known him ____ a long time. 17) The moon does not shine ____ its own light. 18) This is a matter ____ little importance. 19)...

VERB AND FORMS OF VERB WITH HINDI MEANING_List of Verb in hindi

Verbs What is a verb? Verbs are the action words in a sentence that describe what the subject is doing. Along with nouns, verbs are the main part of a sentence or phrase, telling a story about what is taking place. Verbs are words that express action or state of being. There are three types of verbs: action verbs, linking verbs, and helping verbs . Action verbs are words that express action (give, eat, walk, etc.) or possession (have, own, etc.). Action verbs can be either transitive or intransitive. List of Verb in hindi Present Hindi Meaning Past Past Participle Buy खरीदना Bought Bought Build बांधना Built Built burn जलना Burnt Burnt Bend झुकना Bent Bent Bring लाना brought brought Become होना Became Become Come आना Came Come Catch पकड़ना Caught Caught Do करना Did Done Dream ख्वाब देखना Dreamt Dreamt Arise उठना / जागना Arose Arisen Be होना Was, were Been Bear सहन करना Bore Bore Beat मारना Beat Beat Bite काटना Bit Bitten Break तोडना Broke Broken Choose चु...

Class 12 Maths Chapter 2 Inverse Trigonometric Functions

Inverse Trigonometric Functions

SCIENCE AND MATH CONCEPTS

Search This Blog