From a point C on a level ground, the angle of elevation of the top of a tower is 30 degree. If the tower is 100 meter high, find the distance from point C to the foot of the tower.

রেখা'র ক্ষেত্রে নিচের কোনটি সঠিক?

The area of incircle of an equilateral triangle of side 42 cm is ___ cm2

The difference between the circumference and the radius of a circle is 185 cm. Find the radius of a circle is -