Solve the problem.
-A solar reflector is made using 29 identical triangular-shaped mirrors, each having sides 1.7 meters, 1.9 meters, 1.1 meters. What is the total surface area of the reflector (to the nearest square
Meter)?
A) $30 \mathrm {~m} ^ { 2 }$
B) $27 \mathrm {~m} ^ { 2 }$
C) $31 \mathrm {~m} ^ { 2 }$
D) $25 \mathrm {~m} ^ { 2 }$

Question

Solve the problem.
-A solar reflector is made using 29 identical triangular-shaped mirrors, each having sides 1.7 meters, 1.9 meters, 1.1 meters. What is the total surface area of the reflector (to the nearest square
Meter)? 
A) $30 \mathrm {~m} ^ { 2 }$
B) $27 \mathrm {~m} ^ { 2 }$
C) $31 \mathrm {~m} ^ { 2 }$
D) $25 \mathrm {~m} ^ { 2 }$

Quizplus · Accepted Answer

To find the area of one triangular mirror, use Heron's formula. First, calculate the semi-perimeter: $s = \frac{1.7 + 1.9 + 1.1}{2} = 2.35$. Then, the area $A$ is $\sqrt{s(s-1.7)(s-1.9)(s-1.1)}$. Calculate this to find the area of one triangle, then multiply by 29 to find the total area. The total area is approximately 27 square meters.

Solve the Problem 30 m230 \mathrm {~m} ^ { 2 }30 m2 B) 27 m227 \mathrm {~m} ^ { 2 }27 m2

Solve the Problem $30 \mathrm {~m} ^ { 2 }$ B) $27 \mathrm {~m} ^ { 2 }$