TN MATHS CLASS 7 MATHS - CHAPTER 2 - EXAMPLE 2.12 #TN MATHS#CLASS7MATHS # EX2.3SOLUTIONS

THANKS FOR WATCHING !! Questions : Example 2.10 Find the area of the trapezium whose height is 14 cm and the parallel sides are 18 cm and 9 cm of length. Example 2.11 The parallel sides of a trapezium are 23 cm and 12 cm. The distance between the parallel sides is 9 cm. Find the area of the trapezium. Example 2.12 The area of a trapezium is 828 sq. cm. If the lengths of its parallel sides are 19.6 cm and 16.4 cm, find the distance between them. Example 2.13 The area of a trapezium is 352 sq. cm and the distance between its parallel sides is 16 cm. If one of the parallel sides is of length 25 cm then find the length of the other side. Example 2.14 The collar of a shirt is in the form of isosceles trapezium whose parallel sides are 17 cm and 14 cm and the distance between them is 4 cm. Find the area of canvas that will be used to stitch the collar. Exercise 2.3 1. Find the missing values. 2. Find the area of a trapezium whose parallel sides are 24 cm and 20 cm and the distance between them is 15 cm. 3. The area of a trapezium is 1586 sq. cm. The distance between its parallel sides is 26 cm. If one of the parallel sides is 84 cm then, find the other side. 4. The area of a trapezium is 1080 sq. cm. If the lengths of its parallel sides are 55.6 cm and 34.4 cm, find the distance between them. 5. The area of a trapezium is 180 sq. cm and its height is 9 cm. If one of the parallel sides is longer than the other by 6 cm, find the length of the parallel sides. 6. The sunshade of a window is in the form of isosceles trapezium whose parallel sides are 81 cm and 64 cm and the distance between them is 6 cm. Find the cost of painting the surface at the rate of ` 2 per sq. cm. 7. A window is in the form of trapezium whose parallel sides are 105 cm and 50 cm respectively and the distance between the parallel sides is 60 cm. Find the cost of the glass used to cover the window at the rate of ` 15 per 100 sq. cm. Objective type questions : 8. The area of the trapezium, if the parallel sides are measuring 8 cm and 10 cm and the height 5 cm is (i) 45 sq. cm (ii) 40 sq. cm (iii) 18 sq. cm (iv) 50 sq. cm 9. In a trapezium if the sum of the parallel sides is 10 m and the area is 140 sq. m, then the height is (i) 7cm (ii) 40 cm (iii) 14 cm (iv) 28 cm 10. when the non-parallel sides of a trapezium are equal then it is known as (i) a square (ii) a rectangle (iii) an isosceles trapezium (iv) a parallelogram