Heron’s Formula

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Heron’s Formula

Sruthi JB

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1. The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area? *

1 point

72sq cm

54 cm

32 sq cm

54 sq cm

2. If the perimeter of an equilateral triangle is 60 cm, then what is its area? *

1 point

a. 200√2 sq cm

b. 100√2 sq cm

c. 100√3 sq cm

d. 200√3 sq cm

3. If the length of one of the equal sides of an isosceles triangle is 4 cm and its base is 2 cm then its area is: *

1 point

a. √15 sq cm

b. √13 sq cm

c. √12 sq cm

d. √14 sq cm

4. What is the length of each side of an equilateral triangle having an area of 4√3 sq cm

1 point

a. 4cm

b. 5cm

c. 5cm

d. 6cm

Clear selection

5. The base of a right triangle is 3cm and hypotenuse is 5cm. Its area will be *

1 point

4 sq cm

7.5 sq cm

6 sq cm

15 sq cm

6. Area of an isosceles right triangle is 18 sq cm. The length of its hypotenuse is *

1 point

6cm

36cm

6√2 cm

3√2 cm

7. If the area of an equilateral triangle is 81√3 sq cm, then it’s height is : *

1 point

9√3 cm

18√3 cm

12√3 cm

3√3 cm

8. If length of a diagonal of a square is 10cm, it’s area is: *

1 point

25 sq cm

5√2 sq cm

100 sq cm

50 sq cm

9. If the height of an equilateral triangle is 4√3 cm, it’s area is : *

1 point

12√3 cm

8√3 cm

16√3 cm

2√3 cm

10. Find the area of trapezium PQRS, if RS =10cm, PS = 9cm and RQ = 3cm *

1 point

24 sq cm

48 sq cm

27 sq cm

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