Ruby is visiting a wildlife center to gather information for her term paper. the center has a circular pond with a diameter of 20 meters. what is the approximate area of the pond?
a. 1,256 square meters
b. 628 square meters
c. 314 square meters
d. 62.8 square meters

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %