What do I need the Pythagoras theorem for?
As an example you can use it to calculate the length of the hypotenuse in a triangle. The square of the hypotenuse is equal to the sum of the squares of the other two sides.
As a formula a^2 + b^2 = c^2
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Related Maths GCSE answers
All answers ▸Solve simultaneously 2x-y=2, 3x+2y=17 to calculate values of x and y.
Solve the inequality 5x - 7 > 2x +5
Solve this simultaneous equation using the process of elimination: -6x - 2y = 14 3x - 2y = 5
Aled has three concrete slabs. Two of the slabs are square, with each side of length x metres. The third slab is rectangular and measures 1 metre by (x +1) metres. The three concrete slabs cover an area of 7m^2. Show that 2x^2 + x – 6 = 0. Find x.