80. A rectangular box has a length of 8 cm, a width of 10 cm, and a height of 6 cm.
What is the surface area?

a. 374 cm²

b.376 cm²

c.378 cm²

d. 380 cm²

81. A company needs tin can for their merchandise. Each cylindrical container has a radius of 2 m and a height 10 m. How much tin can is needed for one container?

a.150.72 m
²

b. 15.072 m
²

c. 1.5072 m
²

d. 1507.2 m
²
84 .Find the surface area of a cylinder with a height of 2 cm and a radius of 3 cm.

a. 94.2 cm²

b. .942 cm²

c. 9.42 cm²

d. 942cm²​