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stiv31 [10]
2 years ago
13

Find the Area of Triangles when lengths of the sides are given below.

Mathematics
2 answers:
ss7ja [257]2 years ago
6 0

Step-by-step explanation:

you should detect which one in the hypothenus!!

Naily [24]2 years ago
5 0

Answer:

84 cm²  and 272 cm² (3 sf)

Step-by-step explanation:

Use Heron's formula.

Area = \sqrt{p(p-a)(p-b)(p-c)}

where a, b, and c are the lengths of the sides of the triangle

and p=\frac{a+b+c}{2}

(i)   p=\frac{13+14+15}{2}=21

Area = \sqrt{21(21-13)(21-14)(21-15)} = 84 cm²

(ii)   p=\frac{103+115+13}{2}=115.5

Area = \sqrt{115.5(115.5-103)(115.5-115)(115.5-13)} = \frac{ \sqrt{1183875}}{4} =272 cm² (3 sf)

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