Question

Find the area of triangle, whose sides are 4.5cm, 10cm and 10.5cm.

Answer 1

Answer:

A ≈ 22.36cm²

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Answer 2

Step-by-step explanation:

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·﹣4.54+2·(4.5·10)2+2·(4.5·10.5)2﹣104+2·(10·10.5)2﹣10.54≈22.36068cm²