Question

area of a triangle whose sides are 12cm,9.6cm and 7.2cm

Answer 1

here is the answer


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Answer 2

Answer:

The answer is 34.56cm².

Step-by-step explanation:

======================

Let,

a =12cm;

b=9.6cm;

c=7.2 cm.

Therefore,

Semi perimeter = a+b+c/2

= 12+9.6+7.2/2

= 28.8/2

= 14.4 cm.

Therefore,

Area =√s(s-a)(s-b)(s-c)

= √14.4(14.4-12)(14.4-9.6)(14.4-7.2)

= √14.4×2.4×4.8×7.2

= √1194.3936

= 34.56 cm²............. ( answer)

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