Answer:
Surface Area = 84.8 cm²
Step-by-step explanation:
This wedge is simply a triangular prism.
We are given;
Height of door wedge; H = 5 cm
Height of triangular base;h = 3.7 cm
Congruent sides; S2 = S3 = 5cm
base of triangular side;b = S1 = 4 cm
Now, formula for surface area of triangular prism is;
SA = bh + (s1 + s2 + s3)H
Thus, plugging in the relevant values, we have;
SA = (4 x 3.7) + (4 + 5 + 5)5
SA = 14.8 + 70
SA = 84.8 cm²
The volume is found by multiplying the length by the width by the height.
Volume = 18 x 10 x 4 = 720 cubic feet.
I believe the answers are The First, The Seconds, and The Fourth. Hope this helps
Answer:
The Hendecagon
Step-by-step explanation:
The area of the Hendecagon is 758.617 ft^2,
758.617 * $3 = $2,275.85
The area of the Nonagon is 748.001 ft^2
748.001 * $4.5 = $3,366.00
You add 3+3+5=11 parts
132 divided by 11 =12
12 X 3 = 36kg
12 X 3 = 36kg
12 X 5 = 60kg
To make sure add them up to see if it totals to 132 so 36 + 36 + 60 = 132
