The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is
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For triangle ABC, find equation of median AD if co-ordinates of A, B and C are (-1,-3), (5,-4) and (3,2) respectively?
If -5x3+2 = x-6, then find the value of x?
What is the value of [(cos 3θ + 2cos 5θ + cos 7θ)÷(cos θ + 2cos 3θ + cos 5θ)] + sin 2θ tan 3θ?
A sphere of radius 5 cm is melted to form a cone with base of same radius. The height (in cm) of the cone is
If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?
What is the equation of the line perpendicular to the line 5x + 3y = 6 and having Y-intercept -3?
If tan -5π/3 = x, then the value of x is