The perimeter of a regular hexagon is 30 units. What is the length of each side?

What is the measure of each interior angle in a regular octagon?

The surface area of a cube is 5454 square units. What is the length of each side?

What is the sum of the first 15 positive integers?

What is the sum of the angles in a regular heptagon?

If the base of a triangle is 5 units, and the area is 1515 square units, what is its height?

If the base of a triangle is 8 units and its height is 10 units, what is its area?

If a square has a diagonal of length 2222​ units, what is the length of each side?

If the base of a parallelogram is 8 units and its area is 32 square units, what is its height?

What is the name of a polygon with nine sides?