I need as with these two questions? if someone can guide me through I would greatly appreciate it

EGG 131L, Lab 8 Manual, 90 points Alcohol D = WSA - WSL 70 - 63 7 8 =0. 875 D=. 87 9 1cm3 WSA - WSW - 70 - 622. Refer to Lab 8 (a) A sinker of 4 Oz is weighed to be 3 OZ in water. How many Oz will it weigh in the alcohol used in Lab 8? (15 points) (b) An iceberg with a cuboid shape is floating on the sea. The density of ice is 917 kg/m', and the density of seawater is 1030 kg/m'. If the volume of the iceberg under the sea is 10 cubic miles and the height of the iceberg above the sea is 100 ft, how many acres is the horizontal area of the iceberg? (20 points)