The volume of a right circular cylinder can be approximated as follows: volume = πr^2h;
where r is the radius of the cylinder and h is the height of the cylinder;
π is a constant that is roughly equal to 3.

Using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 3 and a height of 5 meters.

A. 405 m^3
B. 135 m^3
C. 2,025 m^3
D. 675 m^3

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?