Book Maths Puzzle Category

the circles are tangent to one another and each circle is tangent to the sides of the right triangle abc with right angle ABC. if the larger circle has radius 12 and the smaller circle has radius 3, what is the area of the triangle...

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Book Other Question

find the sum of all the numbers that can be formed with the digits 2,3,4,5 taken all at a time ?

ans - 93324
p and a do work in 40 and 25 days.they work together but p left after some days and a finish remaining work in 12 days. after how many days did p leave?

ans:8days