A right angled triangle has two short sides of lengths 5cm and 12cm respectively. What is the length of the third side?
13cm. Using Pythagoras theorem a^2 +b^2 =c^2 we substitute our two known lengths into the equation to get 5^2 + 12^2=c^2.
So now we have c^2= 25+144. So c^2 =169. So c=√169 = 13. Don't forget the units!!! So answer is 13cm
NC
Related Maths GCSE answers
All answers ▸Given the points (6,6) and (10,8) calculate the gradient of the line passing through them and the point at which it intersects the y-axis?
How do I solve this pair of simultaneous equations: 3x+y=7 and 3x-y=5?
Find the maximum or minimum value of the function: y = 6x^2 + 4x + 2
2x^2-7x+3=0, solve the following for the two solutions of x