What is the longest line that could be drawn in a box of 20x12x9?
sqrt(20*20+12*12+9*9)=25
What is the length of the longest line that can be drawn in a 20x12x9 box?
Please explain your working?
Two congruent circles of radius 5 cm are drawn in such a way that one is 1 cm below the other . Find the area of red coloured region?