Which of the following is NOT an autobiography of a

In a triangle ABC, AB = 13 cm, BC = 14 cm, and AC = 15 cm. Find the area of the triangle and the length of the altitude from vertex A to side BC.

Angles of a triangle are in the ratio 5 : 6 : 7. Find the difference between the largest and smallest angle of the triangle.

If O is the orthocentre of ΔABC , if ∠ BOC = 100⁰ then what is the measure of  ∠ BAC?

Two chords AB and CD intersect each other at point 'P' (inside the circle) . If CP = 12 cm, DP = 15 cm and AP = 20 cm, then find BP.

The radius of a circle is 25 cm, and the length of the chord is 14 cm. Find the distance between the chord and the centre of the circle.  

The volume (in cu.cm.) of a right circular cylinder with radius 1 cm and height 2 cm on is: (Take π = 22/7)

The length of the each side of an equilateral triangle is 7√3 cm . The area of circumcircle, (cm ² ) is

The perimeter of a rectangular field is 240 meters, and its length is 20% more than its breadth. What is the area of the field?

Find the difference between angle and its complement if the angle is four-fifth of its complement.

If O is circumcentre of acute angled triangle ABC, if ∠  BOC = 100˚  then  ∠ BAC = ?