Question

The perimeter of a right triangle is 12 cm. Its hypotenuse is 5 cm and base is 4 cm. Find the area of the triangle.​

Answer 1

Answer:

the perimeter of a triangle = sum of all sides of a triangle

12cm = a + 5 + 4

a = 12cm - [5cm+4cm]

a = 12cm - 9cm

a = 3cm

area = 1/2bh

          1/2*4cm*3cm

           6cm²

Answer 2

Answer:

perimeter = a + b + c

12 = 5+4+c

12-9 = c

c = 3 ( height)

height = 3 cm

base = 4 cm

$\sf{area \: = \frac{1}{ \cancel2} \times 3 \times \cancel {4} \: \: ^{2} } \\ \\ \sf {area \: = {6cm}^{2} }$

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