Find the length of the diagonal of a rectangle whose sides are `21` cm and `20` cm.

Find the length of the diagonal of a rectangle whose sides are 12cm and 5cm.

find the length of the diagonal of a rectangle whose sides are 8 m and 6m.

Find the area of a triangle whose sides are 12 cm, 16 cm and 20 cm.

Find the area of the triangle whose sides are 13 cm , 20 cm and 21 cm . Also find the height of the triangle corresponding to the largest side .

Find the areas of the rectangles whose sides are :(a) 3 cm and 4 cm (b) 12 m and 21 m (c) 2 km and 3 km (d) 2 m and 70 cm

Find the length and perimeter of a rectangle, whose area = 120 cm^(2) and breadth = 8 cm.

Find the area of a triangle whose sides are 28 cm , 21 cm and 35 cm . Also find the length of the altitude corresponding to the largest side of the triangle .

Find the area of a triangle whose sides are 20 cm, 34 cm and 42 cm. Hence find the height corresponding to the longest side.

Find the area of a triangle whose sides are 18 cm, 24 cm and 30 cm. Also, find the length of altitude corresponding to the larger side of the triangle.

Find the Area of a rectangle whose length is 25 cm and breadth is 18 cm.