Find the second diagonal of a rhombus when it’s first diagonal length is 12 cm and its side is 10 cm?

If the area of a circle is 9π sq.cm then it circumference is

The ratio between the number of sides of two regular polygons is 1 : 2 and the ratio between there interior angles is 2 : 3. The number of sides of these polygons is respectively 

If the circumcenter of the triangle lies outside it, then the triangle is 

If each side of a cube is increased by 10%. Then find the percent change in the volume of the cube.

ΔABC is similar to ΔDEF. Length of AB is 18 cm and  length of the corresponding side  DE is 10 cm. What is the ratio  of Perimeter of ΔABC : Perimeter of ΔDEF?

In ΔABC, ∠C=90° and CD is perpendicular to AB at D. If AD/BD=$$ {\sqrt{k}}$$, then AC/BC=?

In the given figure, ∠QRU = 72°, ∠TRS = 15° and ∠PSR = 95°, then what is the value (in degrees) of ∠PQR ?