CBSE Board Practice

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CBSE Grade IX - Heron's Formula

Question 1

1.	In an isosceles triangle △ABC, if base BC = 14 cm and area is 68.23 sq.cm, then side CA =
	17.00 cm 9.00 cm 15.00 cm 7.00 cm 12.00 cm

Question 2

2.	A field is in the shape of a trapezium whose parallel sides are 39 m and 16 m. The non parallel sides are 14 m and 18 m. Find the area of the field.
	288.26 sq.m 301.26 sq.m 309.26 sq.m 299.26 sq.m 324.26 sq.m

Question 3

3.	In △PQR, if QR = 13 cm, RP = 20 cm, PQ = 12 cm, then corresponding height of side RP =
	6.49 cm 5.49 cm 8.49 cm 9.49 cm 7.49 cm

Question 4

4.	In an isosceles triangle △ABC, the corresponding height of the side BC is 9.75 cm and area is 68.23 sq.cm, then side AB =
	7.00 cm 12.00 cm 17.00 cm 15.00 cm 9.00 cm

Question 5

5.	In △PQR, if QR = 18 cm, RP = 10 cm and the corresponding height of side QR = 9.85 cm, then corresponding height of side RP =
	22.72 cm 17.72 cm 12.72 cm 20.72 cm 14.72 cm

Question 6

6.	In △PQR, if QR = 10 cm, RP = 20 cm and the corresponding height of side QR = 11.23 cm, then perimeter of the triangle =
	46.00 cm 38.00 cm 43.00 cm 48.00 cm 40.00 cm

Question 7

7.	In an isosceles triangle △ABC, if base BC = 20 cm and the corresponding height is 16.16 cm, then corresponding height of side AB =
	12.01 cm 14.01 cm 17.01 cm 22.01 cm 20.01 cm

Question 8

8.	In an isosceles triangle △ABC, if base BC = 13 cm and area is 95.03 sq.cm, then side AB =
	16.00 cm 13.00 cm 19.00 cm 21.00 cm 11.00 cm

Question 9

9.	In △PQR, if QR = 12 cm, RP = 10 cm and the corresponding height of side QR = 8.73 cm, then corresponding height of side PQ =
	3.51 cm 5.51 cm 7.51 cm 4.51 cm 6.51 cm

Question 10

10.	In an isosceles triangle △ABC, if base BC = 17 cm and area is 94.56 sq.cm, then corresponding height of side CA =
	10.51 cm 18.51 cm 16.51 cm 13.51 cm 8.51 cm

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