Surface Area

1. The following figure shows a square-based pyramid.

Which expression represents the surface area of the pyramid?

Choose 1 answer:

(A) $100+80+80+80+80$

(B) $10 \cdot 8$

(C) $40 \cdot 4$

(D) $100+40+40+40+40$

2. The following figure shows a cube.

Which expression represents the surface area of the cube?

Choose 1 answer:

(A) $8+8+8+8+8+8$

(B) $6 \cdot 16$

(C) $6 \cdot 4$

(D) $4 \cdot 4 \cdot 4$

3. The following figure shows a right triangular prism.

Which expression represents the surface area of the prism?

Choose 1 answer:

(A) $2 \cdot 24+120+160+200$

(B) $48+48+120+160+200$

(C) $200+160+120+24$

(D) $24+24+200+120+120$

4. The following figure shows a right rectangular prism.

Which expression represents the surface area of the prism?

Choose 1 answer:

(A) $15+15+30+30+18$

(B) $2 \cdot 15+2 \cdot 30+2 \cdot 18$

(C) $6 \cdot 5 \cdot 3$

(D) $6.5$