Wildlife Biologists studying orcas (killer whales) are following the ocean currents. One of the currents is stalling the orcas. It has a circular rotation and has a radius of 0.25 km. What is the area that particular circle spans?

DIRECTIONS: Use the formula below and show your work with you answer.

A=∏r2

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.