Quantitative Aptitude - Arithmetic Ability Questions

3cosA is equal to

What is the area (in sq cm) of an equilateral triangle of side 14 cm?

What is the ratio of radius of incircle and circumcircle for an equilateral triangle with an area of 22√3 sq. units?

If 22, x, 88 are in a continued proportion, find the value of x.

What is the simplified value of tan (θ/2) + cot (θ/2)?

The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of first 7 years is Rs 73 lakhs and that of last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?

What is the mean of the first five Triangular Numbers?

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed.