How do you find the length of the diagonal of a rectangle of 5cm by 12cm?
Draw the rectangle and put on the measurements Draw on the diagonal Find the right angled triangle Pythagoras tells us a2+b2=c2 where c is the longest side which is what we are trying to find So 122+52=c2 c2=169 c=square root of 169 which = 13
MS
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