Test Paper (Heron’s Formula) – Class –IX

Maximum Marks: 25

1. The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m. Find its area. (3 Marks)

2. Find the area of a quadrilateral ABCD in which AB = 3cm, BC = 4cm, CD = 4cm, DA = 5cm and AC = 5cm. (4 Marks)

3. In Fig., An umbrella is made by stitching 10 triangular pieces of cloth of two different colours, each piece measuring 20cm, 50cm and 50cm. How much cloth of each colour is required for the umbrella? (5 Marks)

4. A field in the shape of a trapezium whose parallel sides are 25m and 10m. The non parallel sides are 14m and 13m. Find the area of the field. (5 Marks)

5. Radha made a picture of an aeroplane with coloured paper as shown in Fig. Find the total are of the paper used. (8 Marks)