Question

find the area of a triangle two side of which are 18cm and 10cm perimeter is 42cm.​

Answer 1

Answer:

69.65 cm² is the area of the given triangle.

Answer 2

Answer:

21√11 cm^2

Step-by-step explanation:

sides : 18 cm,10cm, 42-(10+18) =14cm

s,semiperimeter = 42/2=21

area=√s(s-a)(s-b)(s-c)

= √21(21-18)(21-10)(21-14)

=√21*3*11*7

=21√11 cm^2

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