1. a. Volume = 310 cm3

b. Surface area = 279 cm2

2. Volume = 5140 mm3

3. Volume = 37.2 cm3

Surface area = 74.4 cm2

4. a. Volume = 74.4 cm3

b. Slant height = 8.54 cm

c. Surface area = 107 cm2

5. a. Radius = 10

b. Volume = 2480 cm3

c. Surface area = 1116 cm2

6. Diameter of volcano = 7362 metres