Find the lengthof th hypotenuse of a right triangle with legs of 20cm and 15cm ?
+130561 The hypotenuse is given by :
sqrt (152 + 202) = sqrt (225 + 400) = sqrt(625) = 25 cm
Another way this can be found directly is to notice that this is a multiple of a 3 - 4 - 5 right triangle
where the two legs are 3 and 4.......and the hypotenuse is 5.........multiplying each of these numbers by 5 gives us 15 - 20 - 25........
