The difference between the outside and the inside surface area of a cylindrical pipe 14 cm long is 44 cm². The pipe is made of 99 cm³ of metal. If R is the outer radius and r is the inner radius of the pipe, then what is (R + r) equal to? (Take π = 22/7)

If log₁₀[995 + √x²- 12x +16] = 3, then what is the sum of the…

If log₁₀a/(b – c) = log₁₀b/(c – a) = log₁₀c/(a – b), (a ≠ b…

In a triangle ABC, DE is a line segment which intersects AB at D and…

ABCD is a cyclic quadrilateral. AB and DC when produced, meet in E. Which of…

ABCD is a trapezium in which AB is parallel to DC. The vertices A, B,…