A cone is formed by bending a sector of a circle Saving an angle or 210°. Find the radius of the base of the cone. If the diameter of the circle is 12cm.
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1984
Find a factor which is common to all 3 binomial expressions \(4a^2 - 9b^2, 8a^3 + 27b^3, (4a + 6b)^2\).
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1984
If 2x + 3y = 1 and x - y = 11, find (x + y).
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1984
Factorize \(6x^2 - 14x - 12\)
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1984
P varies directly as the square of Q and inversely as R. If P = 36, when Q = 3 and R = 4, find P when Q = 5 and R = 2.
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1984
Thirty boys and X girls sat for a test. The mean of the boys' scores and that of the girls were respectively 6 and 8. Find 8 if the total score was 468.