The length of the radius of a circle with centre O is 5 cm and the length of the chord AB is 8 cm. The distance of the chord AB from the point O is
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ABCD is a cyclic trapezium in which AD || BC. If ∠ABC = 70°, then ∠BCD is
The length of the two adjacent sides of a rectangle inscribed in a circle are 5 cm and 12 cm respectively. Then the radius of the circle will be
In a triangle the length of the side opposite the angle which measures 60° is 6√3 cm. What is the length of the side opposite to the angle which measures 90°?
Which of the following numbers is not a prime number?
Find the number which is NOT a prime number.
The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).