A rectangular prism is shown. 8 ft
11 ft
2 ft
Which expression can be used to find the
lateral surface area of the prism?
A (8+2) - 11
B (8 + 2 + 11). 11
C (8+2+8+ 2) - 11
D (8+2+8+2) 11 + 2(8.2)

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given