If sinA + sin² A = 1, then the value of the expression (cos² A+cos⁴A) is ______________.

Find the value of x in the proportion 69 : 23 :: 63 : x.

Two pipes, P and Q, together can fill a tank in 5 hours. If pipe P alone can fill the tank in 10 hours, then how much time (in hours) will pipe Q alone take to fill the tank?

The surface area of a cube is 480 $$cm^2$$​ Find its volume.

A bus is moving at a speed of 82 km/hr. If its speed is reduced by 28%, then what will be the new speed of the bus (in km/hr)?

Find the Highest Common Factor (HCF) of 372, 732 and 2196.

Find the value of x in the proportion 69 : 23 :: 63 : x.

Two pipes, P and Q, together can fill a tank in 5 hours. If pipe P alone can fill the tank in 10 hours, then how much time (in hours) will pipe Q alone take to fill the tank?

The surface area of a cube is 480 $$cm^2$$​ Find its volume.

A bus is moving at a speed of 82 km/hr. If its speed is reduced by 28%, then what will be the new speed of the bus (in km/hr)?

Find the Highest Common Factor (HCF) of 372, 732 and 2196.