List of top General Aptitude Questions on Area of a Triangle

A cone of radius 9 cm and height 15 cm is melted and made into a cylinder of height 45 cm. The diameter of the cylinder is:

The volume of a cylinder having base radius 3 cm is 396 \(\text{cm}^3\). Find its curved surface area (in \(\text{cm}^2\)). (Use \(\pi\) = 22/7)

In a square, lengths of the diagonals are (4k+6) cm and (7k -3) cm. The area of the square (in \(\text{cm}^2\)) is:

What can be placed at ‘?’ if both sides of ‘::’ have the same relationship between numbers:
85 : 42 :: 139 : ?

If a person buys 15 pencils for ₹12, and sells 12 pencils for ₹15, find the gain or loss percentage.

A cylinder has radius $7\text{ cm}$ and height $10\text{ cm}$. Find its curved surface area. [$\text{CSA} = 2\pi rh$]

The area of a sector of a circle is \(110\text{ cm}^2\) and the central angle of the sector is \(56^\circ\). Find the radius of the circle. Take \(\pi = \dfrac{22}{7}\).

A right circular metal cone (solid) is \(42\text{ cm}\) high and its radius is \(\dfrac{21}{2}\text{ cm}\). It is melted and recast into a sphere. Find the radius of the sphere.