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anygoal [31]
3 years ago
6

What is the area of the triangle 10 13 12

Mathematics
1 answer:
disa [49]3 years ago
5 0

Answer:

A= 57 sq units

Step-by-step explanation:

To calculate the are area of a triangle we use the Herons formula:

A=√s(s-a)(s-b)(s-c) where a, b and c are the sides of the triangle.

s=(a+b+c)/2

s=(10+13+12)/2

=17.5

A=√[17.5(17.5-10)(17.5-13)(17.5-12)]

A= 57 sq units

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It has been given that the triangles JKL and the triangle RST are congruent.

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Now, to find the length of JK we need to find the length of the side RS. The coordinates of the points R and S are (-1,-2) and (2,-1).

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