On Saturday, 960 people visit the zoo. Of the visitors, 40% are children. How many of the visitors on Saturday were children?
1 answer:
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the surface area of the right triangular prism is 864 . Correct option D. 864
<u>Step-by-step explanation:</u>
Here we have The net of the triangular prism is shown below . We need to find What is the surface area of the right triangular prism . Let's find out:
We have two same triangles , with area =
⇒ { 2 is multiplied as there are 2 triangles }
⇒
Now , We have 3 rectangles two of which are same have parameters as :
So , area of two rectangles
⇒
⇒
⇒
And area of other rectangle is :
⇒
⇒
⇒
So , total area = 288+480+96=864
Therefore , the surface area of the right triangular prism is 864 . Correct option D. 864