Advertisements
Advertisements
प्रश्न
The radius of a circle is 7ab – 7bc – 14ac. Find the circumference of the circle. `(pi = 22/7)`
उत्तर
We have, radius of the circle = 7ab – 7bc – 14ac = r ...[say]
We know that,
∵ The circumference of the circle = 2πr
= `2 xx 22/7 xx (7ab - 7bc - 14ac)`
= `44/7 xx 7(ab - bc - 2ac)`
= 44[ab – c(b + 2a)]
APPEARS IN
संबंधित प्रश्न
(7x + 3)(7x – 4) = 49x2 – 7x – 12
Evaluate the following, using suitable identity
297 × 303
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
x4 – y4
672 – 372 = (67 – 37) × ______ = ______.
The value of (a + 1)(a – 1)(a2 + 1) is a4 – 1.
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x2 – 9
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`(2p^2)/25 - 32q^2`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Verify the following:
`((3p)/7 + 7/(6p))^2 - (3/7p + 7/(6p))^2 = 2`
Find the value of `(198 xx 198 - 102 xx 102)/96`
