For the first one....the park will have an area =
Old Park Area * (Scale Factor)^2 =
37625 * 4^2 = 602,000 yd^2
Second one
The volume od the new prism will have a volume (Scale Factor)^3 as great = (1.5)^3 = 3.375 times as great
Third one
The volume of the new cone will be
Old volume * (Scale Factor)^3 =
2880 * (1/4)^3 = 2880/ 64 = 45 m^3