If the base of a triangle is 8 cm and height is 4 cm, what is its area?
D, E, F are midpoints of sides AB, BC and CA of ∆ABC, if ar(∆ABC) = 64 cm2 then, area of ∆BDE is:
The base of a prism is a right-angled triangle having its base and altitude as 10 cm and 24 cm respectively. If the height of prism is 30 cm, what will be the lateral surface area ?