a2+ b2=c2
152+202= 625 (15x15+20x20)
sqrt 625=25
Side c is 25
20
The lengths of the legs of a right triangle are 15 cm and 20 cm. What is the length of the hypotenuse?
20 since the question mentions the hypotenuse, by definition this must be a right angled triangle, therefore use Pythagoras's theorem... Let a be the unknown side.... Let b be the side of length 15 and... Let c be the hypotenuse of length 25 From the theorem: a^2 + b^2 = c^2 by substitution... a^2 + 15^2 = 25^2 or... a^2 = 25^2 - 15^2 or... a^2 = 625 - 225 that is... a^2 = 400 or... a = SQRT 400 which is... 20
The length of the third side is 20 cm
Surprisingly, yes.
20
The lengths of the legs of a right triangle are 15 cm and 20 cm. What is the length of the hypotenuse?
20 units
wire is first bent into the shape of a triangle. Each side of the triangle is 16 cm long. Then the wire is unbent and reshaped into a rectangle. If the length of the rectangle is 17 cm, what is its width?
The length of the other leg would be 13.2. Keep in mind the Pythagorean theorem: a2 + b2 = c2 a would be the length of one side of the triangle, b is the other side, and c is the hypotenuse. a2 + (15)2 = (20)2 a2 + 225 = 400 a2 = 400 - 225 a2 = 175 √a2 = √175 a = 13.2
20 since the question mentions the hypotenuse, by definition this must be a right angled triangle, therefore use Pythagoras's theorem... Let a be the unknown side.... Let b be the side of length 15 and... Let c be the hypotenuse of length 25 From the theorem: a^2 + b^2 = c^2 by substitution... a^2 + 15^2 = 25^2 or... a^2 = 25^2 - 15^2 or... a^2 = 625 - 225 that is... a^2 = 400 or... a = SQRT 400 which is... 20
13
The length of the third side is 20 cm
Surprisingly, yes.
Subtract the two side lengths from the perimeter. The perimeter of a triangle is just the length of the 3 sides added together. Eg. Q: A triangle has a perimeter of 20 m. One side is 5m and another is 10m. How long is the 3rd side? A: Perimeter - side 1 - side 2 = side 3 Side 3 = 20 - 5 - 10 = 5 m
The sum of the two shorter sides of a triangle must be longer than the third. Thus the third side can be any length greater than 0 and less than 20. Examples are 0.5, 2, 5, 10, 15, 17.5, 19.9.
Using Pythagoras' theorem the length of the remaining side is 40 meters