When I was two years old, my sister was half my age. If I am now sixty years old, how old is my sister?
byA Former Brilliant Member
By tracing the edges, we can calculate that the perimeter of figure 1 is 4 units, and the perimeter of figure 2 is 12 units. What is the perimeter of figure 3?
byArron Kau
Given that and are positive reals such that , find the maximum possible value of .
byVictor Loh
A triangle, a square, a pentagon, a hexagon, an octagon, and a circle all have the same perimeter.
Which one has the smallest area?
Note:All of the polygons are regular.
bymath man
True or False?
If and 实数,这样吗 , then
byChung Kevin