Find the length of the hypotenuse of the triangles whose other two sides are:(iii)5 cm ,12 cm

Find the length of the hypotenuse of the triangles whose other two sides are:(ii)24 cm ,7 cm

Find the length of the hypotenuse of the triangles whose other two sides are:(i)6cm ,8 cm

Find the greatest angle of the triangle whose sides are 3, 5 and 7 cms.

Find the greatest angle of the triangle whose sides are of length 5, 12 and 13 cms

Find the areas of the circles whose radii are given below:(iii) 49 cm

The sides of an equilateral triangle increae at the rate of sqrt3 cm//sec . What will be the rate of increae in area of the triangle when the length of a side is 5 cm?

Find the areas of the circles whose diameters are given below:(iii)200 cm

Two concentric circles are of radii 5 cm and 3 cm.Find the length of the chord of the larger circle which touches the smaller circle.

Prove that the area of the equilateral triangle drawn on the hypotenuse of a right angle triangle is equal to the sum of the areas of the equilateral triangles drawn on the other two sides.

The area of an equilateral triangle ABC is 17320.5cm^2 .With each vertex of the triangle as center,a circle is drawn with radius equal to half the length of the side of the triangle(seeFig.12.28).Find the area of the shaded region.(use pi=3.14 and sqrt3=1.73205 )