The radius of a circle is 7ab - 7bc - 14ac. Find the circumference of the circle. (π = 22/7)
Solution:
Circumference of the circle = 2πr
Given, radius of circle = 7ab - 7bc - 14ac
⇒ Circumference of the circle = 2πr
= 2 × π × (7ab - 7bc - 14ac)
= 2 × (22/7) × (7ab - 7bc - 14ac)
= 2 × (22/7) × 7(ab - bc - 2ac)
= 44(ab - bc - 2ac)
✦ Try This: The radius of a circle is 21ab + 28bc - 56ac. Find the circumference of the circle.(π = 22/7)
Circumference of the circle = 2πr
Given, radius of circle = 21ab + 28bc - 56ac
⇒ Circumference of the circle = 2πr
= 2 × π × (21ab + 28bc - 56ac)
= 2 × (22/7) × (21ab + 28bc - 56ac)
= 44 / 7 [7 (3ab + 4bc - 8ac)]
= 44 (3ab + 4bc - 8ac)
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 9
NCERT Exemplar Class 8 Maths Chapter 7 Problem 107
The radius of a circle is 7ab - 7bc - 14ac. Find the circumference of the circle. (π = 22/7)
Summary:
The radius of a circle is 7ab - 7bc - 14ac. The circumference of the circle is 44(ab - bc - 2ac)
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