Julius has three times as many stamps in his collection as his friends Liam and Mario combined. Liam has 10 stamps
in his collection. Julius has 87 stamps in his collection.
How many stamps does Mario have in his collection?

Which formula gives the area of a triangle? a=1/2(b+h)

John bought 2 horses at rs 20000 each

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).