What is the approximate percent decrease from 1,865 to 1,240? 33.5% 50% 66.5% 150%

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

The blue segment below is a diameter of o. what is the length of the radius of the circle?