Answer:
65
Step-by-step explanation:
The area of the square is
and the area of a single triangle is
.
The total area is the square plus the 4 triangles 
Answer:
1
Step-by-step explanation:
The amplitude is the maximum distance away from the middle of the wave. Here we can see that the middle of the wave is the x axis and the farthest point (largest difference between the y coordinate of the x-axis, or the line y = 0, and the wave) is 1 unit away.
Step-by-step explanation:
4.
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5.
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As we know the radius and slant height, we can use Pythagoras' Theorem to find the perpendicular height.
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Now substitute this into the volume formula.
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6.
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7.
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His mistake is he didn't make 6/10 to 60/100 he added them without changing the 6/10
Answer:
380
Step-by-step explanation:
if you have 400 hundread you would subtract 5% from 400 amd you would get 380.