Based on the formula for triangles, A = bh/2, I did that and got 24.5 but since there are 2 of the triangles I did 24.5 x 2 = 49
. I know that the line in the triangle means they are congruent. But are they congruent to show that the base and height is 7 x 7 for the one that the line is crossing of does it show that itś 7x7 for both triangles?
I found the area of the square and subtracted that from the area of the triangles to get 147.
My area of the triangles is 49ft^2
My area of the pebbles is 147ft^2.
Is this correct?
I found the area of the square and subtracted that from the area of the triangles to get 147.
My area of the triangles is 49ft^2
My area of the pebbles is 147ft^2.
Is this correct?
1 answer:
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Answer:
Step-by-step explanation:
Consider the graphs of the and
.
By equating the expressions, the intersection points of the graphs can be found and in this way delimit the area that will rotate around the Y axis.
then
o
. Therefore the integration limits are:
and
The inverse functions are given by:
and
. Then
The volume of the solid of revolution is given by: