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Post a LessonAnswered on 10 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 3 Coordinate Geometry/EXERCISE - 9.2
Saurav Mitra
Tutor
Diameter = 1.5 m
Radius (𝑟)=0.75m
Cost per meter = ₹15
Length of lace =Circumference =2pir
=2×3.14×0.75=4.71m
2πr=2×3.14×0.75=4.71m
Cost =4.71×15=
₹70.65
Length of lace required = 4.71 m
Cost = ₹70.65
read lessAnswered on 31 May Learn CBSE/Class 9/Class 9 Mathematics/Chapter 1 Number Systems/EXERCISE - 1.1
Yogesh Kumar Pandey
Passionate Teacher for Science, Maths & Programming (C, Java)
(i) Every natural number is a whole number.
True, Natural numbers start from 1 and go on indefinitely (1, 2, 3, 4, …).Whole numbers include all natural numbers plus zero (0, 1, 2, 3, …).Since every natural number is part of the whole number set, this statement is true.
(ii) Every integer is a whole number.
False, Integers include negative numbers as well (-3, -2, -1, 0, 1, 2, 3, …).Whole numbers do not include negative numbers; they start from 0 and go upward.Since negative integers are not whole numbers, this statement is false.
(iii) Every rational number is a whole number.
False, Rational numbers include fractions and decimals that can be expressed as p/q, where p and q are integers and q is not equal to 0.
Whole numbers do not include fractional values or non-integer decimals.
Since rational numbers like 15\4 or 3.75 are not whole numbers, this statement is false.
read lessAnswered on 16 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 2 Polynomials/EXERCISE - 2.3
Rajesh Kumar N
"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"
Answered on 16 Jun Learn CBSE/Class 9/Class 9 Mathematics/Chapter 1 Number Systems/EXERCISE - 1.1
Rajesh Kumar N
"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"
Answered 5 days ago Learn CBSE/Class 9/Class 9 Mathematics/Chapter 1 Number Systems/EXERCISE - 1.1
Sadiq
C language Faculty (online Classes )
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