Herons Formula-MCQ

1.   The area of a triangle is 150 cm² and its sides are in the ratio 3 : 4 : 5. What is its perimeter?

      a. 10 cm

      b. 30 cm

      c. 45 cm

      d. 60 cm

2.   What in the area of an equilateral triangle with side 2 cm?

      a. √6cm²

      b. √3cm²

      c. √8cm²

      d. 4cm²

3.   What is the length of each side of an equilateral triangle having an area of

      a. 4cm

      b. 5cm

      c. 5cm

      d. 6cm

4.   The sides of a triangle are 3 cm, 5 cm and 6 cm. What is its area?

      a. 2√3cm²

      b. 4√14cm²

      c. 5√12cm²

      d. 2√5cm²

5.   What is the area of an equilateral triangle with side

      a. 2/27 cm²

      b. 2/15 cm²

      c. 3/16 cm²

      d. 3/14 cm²

6.   length of one of the equal sides of an isosceles triangle is 4 cm. If its be is 2 cm then what is its area?

      a. √15cm²

      b. √13cm²

      c. √12cm²

      d. √14cm²

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

      a. 200√2cm²

      b. 100√2cm²

      c. 100√3cm²

      d. 200√3cm²

8.   The sides of a triangle are 8 cm, 11 cm and 13 cm. What is its area?

      a. 8√30cm²

      b. 4√10cm²

      c. 3√100cm²

      d. 6√200cm²

9.   The sides of a triangle are 15 cm, 17 cm and 8 cm. What is its area?

      a. 20cm²

      b. 40cm²

      c. 60cm²

      d. 80cm²

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

        a. 32 cm²

        b. 54 cm²

        c. 67 cm²

        d. 72cm²

     1.  D

     2.  B

     3.  A

     4.  B

     5.  C

     6.  A

     7.  C

     8.  A

     9.  C

     10. B