ABC is an isosceles triangle with AB = AC, A circle through B touching AC at the middle point of Q, intersects AB at P. Then AP : AB is : 

The total surface area of a hemisphere is 166.32 sq cm, find its radius? 

What is the total CSA of cone whose radius is 3 cm and height is 4 cm? 

Cost price of 25 chairs equals the selling price of 20 chairs. Find the profit %.

When a number is increased by 28, it becomes 107% of itself. What is the number?

Two men start walking together to a certain destination, one at 6 km/hr and other at 7.5 km/hr. The later arrives an hour before the former. The distance is ?

If A : B: C= 2 : 3 : 4, then $$ {A\over B}:{B\over C}:{C\over A}$$ is equal to 

If two complimentary angles are in the ratio of 4:5, find the greater angle.