Im doing triangles in class right now and i don't know how to find out if its a right triangle let alone find if its a 90* how do i find it?

All right triangles follow the pythagorean theorem. One way to tell if a triangle is a right triangle is by plugging all three side lengths into the pythagorean theorem:

a^2 + b^2 = c^2

(a and b being legs, c being the hypotenuse).

If the equation works, the triangle is right. If the equation is false, the triangle is not right.

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

2.56 is the width of the garden

step-by-step explanation: