Answer:
178.3 mm²
Step-by-step explanation:
Surface area = Base area + 3 x side triangles area
Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3
Answer:
C
Step-by-step explanation:
If you need the explanation tell me
:D
<span> (38/2) x 3 1/2 or (114/6) x 3 1/2=66.5
so your answer is 66.5</span>
The answer is 140 feet because 10×14 is 140
