We have two triangles with base 9ft and height 12.3ft and two triangles with base 11ft and height 11.9ft.
The formula of an area of a triangle:

Triangle #1:
b = 9ft and h = 12.3ft. Substitute:

Triangle #2:
b = 11ft and h = 11.9ft. Substitute:

The Lateral Area:

<h3>Answer: B. 241.6 ft².</h3>
Answer:
y = [-2]x - 1
Step-by-step explanation:
y = [-2]x - 1 will make the lines perpendicular.
Because the product of slopes of perpendicular lines is -1
-> 1/2*(-2) = -1
Hope it helps you in your learning process.
Answer:
448
Step-by-step explanation:
A=((a+b)/2) h=(17+39)/2·16=448
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