Question

The sides of a triangle are 7cm, 9cm and 14cm. It’s area is
​

Answer 1

Answer:

A≈26.83cm²

Step-by-step explanation:

Triangle

Solve for area

A≈26.83cm²

a Side

7

cm

b Base

9

cm

c Side

14

cm

Using the formulas

A=s(s﹣a)(s﹣b)(s﹣c)

s=a+b+c

2

Solving forA

A=1

4﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·﹣74+2·(7·9)2+2·(7·14)2﹣94+2·(9·14)2﹣144≈26.83282cm²

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