If all of the diagonals are drawn from a vertex of a quadrilateral, how many triangles are formed?
a.1
b.2
c.3
d.4

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?