Including the bus driver, there are 20 people on a bus. during a one-hour ride, each person produces 740 btus (british thermal units). the interior of the bus measures 38 feet by 8.25 feet by 7.5 feet. how many btus per cubic foot are produced? enter your answer, rounded to the nearest hundredth, in the box.

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.