What are three ways to express 3 to the 5th power

1st: 3 x 3 x 3 x 3  - we multiplied 3 5 times

2nd: 3 ^ 5 (raised to the power ^)

3rd: 3^2 x 3 ^3
(3 x 3) x (3 x 3 x 3)
9 x 27, the product is also equals to 243. 

You do 1.25in times 15in and get 18.75in squared

The sum of the angles in a triangle is 180°. this is called the angle-sum property.the sum of the lengths of any two sides of a triangle is greater than the length of the third side. similarly, the difference between the lengths of any two sides of a triangle is less than the length of the third side.the side opposite to the largest angle is the longest side of the triangle and the side opposite to the smallest angle is the shortest side of the triangle.