11). The ratio of length of each equal side and the third side of an isosceles triangle is 3:4. If the area of the triangle is \( \Large \Large 18\sqrt{5} \) sq units, the third side is
| A). \( \Large 8\sqrt{2} \)units |
| B). 12 units |
| C). 16 units |
| D). \( \Large 5\sqrt{10} \)units |
|
12). Three sides of a triangular field are of length 15 m, 20 m and 25 m long, respectively. Find the cost of sowing seeds in the field at the rate of RS. 5 per Sq m.
| A). 750 |
| B). 150 |
| C). 300 |
| D). 600 |
|
13). A \( \Large \Large \triangle DEF \) is formed by joining the mid points of the sides of \( \Large \Large \triangle ABC\). Similarly, a \( \Large \Large \triangle PQR \) is formed by joining the mid-points of the sides of the \( \Large \Large \triangle DEF \). If the sides of the PQR are of lengths 1, 2 and 3 units, what is the perimeter of the \( \Large \Large \triangle ABC \)?
| A). 18 units |
| B). 24 units |
| C). 48 units |
| D). Cannot be determined |
|
14). Find the area of a rectangle having 15 m length and 8 m breadth.
| A). 120 sq m |
| B). 111 sq m |
| C). 115 sq m |
| D). 125 sq m |
|
15). The length of a rectangular field is 100 m and its breadth is 40 m. What will be the area of the field?
| A). \( \Large (4\times 10^{2}) \)sq m |
| B). \( \Large (4\times 10) \)sq m |
| C). \( \Large (4\times 10^{4}) \)sq m |
| D). \( \Large (4\times 10^{3}) \)sq m |
|
16). The area of a rectangular playground is 300 sq m. If the breadth of the field is 15 m, find the length of the field.
| A). 20 m |
| B). 11 m |
| C). 25 m |
| D). 10 m |
|
17). The ratio of length and breadth of a rectangle is 5 : 3. If length is 8 m more than breadth, find the area of the rectangle.
| A). 300 sq m |
| B). 250 sq m |
| C). 240 sq m |
| D). 185 sq m |
|
18). The perimeter of a rectangle having area equal to \( \Large \Large 144 cm^{2} \) and sides in the ratio 4 : 9 is
| A). 52 cm |
| B). 56 cm |
| C). 60 cm |
| D). 64 cm |
|
19). The area of a rectangle lies between \( \Large \Large 40 cm^{2} \) and \( \Large \Large 45 cm^{2} \). If one of the sides is 5 cm, then its diagonal lies between
| A). 8 cm and 10 cm |
| B). 9 cm and 11 cm |
| C). 10 cm and 12 cm |
| D). 11cm and 13 cm |
|
20). The area of a rectangular field is 15 times the sum of its length and breadth. If the length of that field is 40 m, what is the breadth of that field?
| A). 24 m |
| B). 25 m |
| C). 28 m |
| D). 32 m |
|
