Grade VIII Mathematics

Mensuration Ex -11.2. Grade VIII Mathematics.

. 1) The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and 1.2 m and perpendicular distance between them is 0.8 m..

. 2) The area of a trapezium is 34 cm 2 and the length of one of the parallel sides is 10 cm and its height is 4 cm. Find the length of the other parallel side.

. . . AB = h = 15 m. 3) Length of the fence of a trapezium shaped field ABCD is 120 m. If BC = 48 m, CD = 17 m and AD = 40 m , F ind the area of this field. Side AB is perpendicular to the parallel sides AD and BC..

. Given : BD= d = = 24m ; h1 and h2 are 13 m and 8 m respectively.

. Given: d1 = 7.5 cm, d2 = 12 cm Area of the rhombus = 1 × d1 × d2 2 = 1 × 7.5 × 12 2 = 6 × 7.5 = 45 cm 2 Hence, area of the rhombus = 45 cm 2 ..

. Homework Q.No . 7.