If the length of the diagonal of a square is 20cm,then its perimeter must be

a. 402cm     b. 302cm    c. 10cm    d. 152cm

The perimeter of a triangle is 28 cm. If the length is 5/2 times its breadth, find the length and breadth of the triangle.

If 1/4th of the wall is painted blue, 1/2 is painted yellow and remaining 3 m is painted white, what is the length of the wall?

The area of a square is 60.5 cm². Find the length of its diagonal (in cm).

In the given figure, the angle bisectors of B and C of an isosceles triangle intersect at point O. Find the angle BOC (in degree), when ∠ABC = ∠ACB = 75°.

If the circumference of a circle is 22 cm, then what must be its area (in cm²)?

Which of the following triangle has the maximum area when inscribed inside the circle of same radius?

If the perimeter of a semicircle is 108 cm, then find its area (in cm²).

If the length of one side and the diagonal of a rectangle are 5 cm and 13 cm respectively, then find its perimeter (in cm).