1.
Find the surface area of the cone to the nearest tenth.
A.
197.9 in
2
B.
452.4 in
2
C.
351.9 in
2
D.
301.6 in
2
Hint
2.
Find the lateral area of the regular pyramid.
A.
240 cm
2
B.
180 cm
2
C.
300 cm
2
D.
120 cm
2
Hint
3.
Find the surface area of the triangular pyramid with a base of an equilateral triangle with length of 4. The faces are isosceles triangles with a slant height of 6 units. (Round to the nearest tenth.)
A.
98.1 sq. units
B.
85.6 sq. units
C.
102.9 sq. units
D.
42.9 sq. units
Hint
4.
Find the lateral area of the regular hexagonal pyramid. (Round to the nearest tenth.)
A.
144.0 sq. units
B.
292.8 sq. units
C.
146.4 sq. units
D.
219.6 sq. units
Hint
5.
If the cone had a slant height of 18 inches and a radius of 8 inches, and a piece is cut off of the top with a slant height of 8 inches and a radius of 5 inches, find the surface area of the frustom. (Round to the nearest tenth.)
A.
606.3 sq. in.
B.
326.7 sq. in.
C.
495.1 sq. in.
D.
508.4 sq. in.
Hint