A rectangular field in a park is 85.0 ft wide and 110 ft long. What is the area of the field in square meters ?

A house is 51.0 ft long and 28.0 ft wide and has 8.0-ft-high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimeters?

(a) Compute the order of magnitude of the mass of a bathtub half full of water. (Assume the tub measures 1.3 m by 0.5 m by 0.3 m.) ?

(b) Compute the order of magnitude of the mass of a bathtub half full of pennies. (Assume the pennies are made entirely of copper.) ?