What is the area of a triangle whose sides measure 15 inches, 18 inches, and 21 inches?
Give your answer in simplified radical form.
+37146 FIrst is it a right triangle ? 15^2 + 18^2 = 21^2 No it is not
Try using Heron's Formula
+94 You may also be able to use Pythagoras Theorem (SSS) to find x.y and then convert x.y into radical form x a/b
x = whole number
y = .decimal
a/b = fraction from y
+94 Area=√p(p−a)(p−b)(p−c)
Where p is half the perimeter = a+b+c/2
This is the formula for finding the area of a triangle with 3 different sides (called Heron's Formula), but unfortunately, I can't help you when it comes to simplified radical form as I do not know how to calculate that.
+94 You may also be able to use Pythagoras Theorem (SSS) to find x.y and then convert x.y into radical form x a/b
x = whole number
y = .decimal
a/b = fraction from y
