Question

The diagram shows a triangle 5cm 12 cm work out the area of the triangle

Answer 1

Answer:

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Class 9

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>>Heron's Formula

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>>Find area of the triangle with sides 5 c

Question

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Find area of the triangle with sides 5 cm, 12 cm, 13 cm.

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Solution

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Given, the sides of a triangle are 5cm,12cm and 13cm

semi−perimeter =

2

a+b+c

s= 2(5+12+13)

s= 230

s=15cm

Area of the triangle (according to the Heron's Formula)

= s(s−a)(s−b)(s−c)

= 15(15−5)(15−12)(15−13)

= 15(10)(3)(2)

= 900

=30cm 2

.

Answer 2

Answer:

30cm2.

Step-by-step explanation:

1/2 x5x12

1/2x12=6

5x6=30cm2