If a vertical stick 12 m long casts a shadow 8 m long on the ground and at the same time a tower casts a shadow 40 m long on the ground, then the height of the tower is

If tangents PA and PB from a point P to a circle with center O are inclined to each other an angle of 80°, then POA is equal to

If AB, AC,PQ are tangent as in figure and AB = 5 cm, find the perimeter of ΔAPQ

In the given figure, if TP  and TQ are the two tangents to a circle with center O so that POQ = 110°, then PTQ is equal to

If P is a point outside the circle, then the number of tangents from P to the circle is

ABC and BDE are two equilateral triangles such that D is the mid point of BC. Ratio to the area of triangles ABC and BDE is

From a point P, the length of the tangent to a circle is 15 cm and distance of P from the center of the circle is 17 cm. Then the radius of the circle is

Which of the following are similar?

Which of the following statement is false?

Sides  of two similar triangles are in the ratio 4 : 9. Areas of those triangles are in the ratio