8 months ago

Find the area of a triangle whose sides are 3cm,6cm and 7cm

Mathematics

1 answer:

nadya68 [22]8 months ago

4 0

Answer:

See below

Step-by-step explanation:

It is NOT a RIGHT triangle so you <u>cannot use</u> 1/2 b * h

but you can use Heron's Formula

Area = sqrt( s (s-a)(s-b)(s-c) )

s = semi- perimeter = (3+6+7)/2 = 8

Area = sqrt ( 8 ( 8-3)(8-6)(8-7) ) = sqrt ( 80) = 8.9 cm^2

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