Math, asked by harshpreetkaurmvm, 8 months ago

find the area of triangle two sides which are 16cm and 12 cm and the perimeter is 42cm.​

Answers

Answered by Martialsrujan
9

Answer:

Step-by-step explanation:

Fiirst side of triangle = a = 16cm.

Second side of triangle = b = 12cm

Perimeter = 42 cm.

∴A + B = 16 + 12= 28cm.

Hence, C= 42cm- 28cm=14cm.

s= A+B+C/2 = 16+12+14/2 = 42/2 = 21

Herons formula,

Area of Triangle = A= √s(s-a)(s-b)(s-c)

√21(21-16)(21-12)(21-14)

√21(5)(9)(7)

√6615

81.33265027

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