Question

what is perimeter of triangle ABC if AB=12ft and BC=16ft

Answer 1

Use the Pythagorean theorem:
a^2 + b^2 = c^2

You know that the side AB is 12 ft long, so let's replace a with 12.
You know that side BC is 16 ft long, so let's replace b with 16.
Now the equation becomes:
12^2 + 16^2 = c^2
once you solve for c^2, you can find the square root, which will give you the length of side CA.
Okay, so now that you have all of the sides determined, add them together.

12^2 + 16^2 = c^2
144 + 256 = 400
Remember to find the square root of 400 now, because it is equivalent to c to the second power.
20*20=400, so 20 is the square root of 400 and also the length of CA.

Finally, you can add the sides together, 12 + 16 + 20 = 48, and ta dum, you have your perimeter :)

Answer 2

mmmm its brety uncomplete qs since u can form many triangle with 16 & 12
but u can know the maximum perimeter that it could be .
which is of the furmola
max < 2 (Ab+bc)
max<56
@Shirobara u cant use the Pythagorean theorem since its not mintion that its right triangle .

Answer 3

@dememinskoff Please post whether or not the given triangle is supposed to be a right triangle. Thanks.