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Mathematics 21 Online
OpenStudy (kailee1423):

I need help with a few questions that I got wrong on my homework. 1.Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. (Pic in comments) 2.Find the volume of the square pyramid shown. Round to the nearest tenth if necessary. (Pic in comments)

OpenStudy (kailee1423):

OpenStudy (kailee1423):

3.Find the volume of the square pyramid shown. Round to the nearest tenth if necessary. 4.Find the volume of the given prism. Round to the nearest tenth if necessary.

OpenStudy (kailee1423):

@phi @mathway

OpenStudy (phi):

which one do you want to do?

OpenStudy (kailee1423):

We can start on the first one if you don't mind:) I just don't understand them.

OpenStudy (phi):

Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. lateral area is the "side area" , which is the area not including the "top or bottom" That is not very clear, but we we assume the top and bottom are the triangles and that means the "sides" are the 3 rectangles.

OpenStudy (phi):

The first step to doing this is find the length and width of each side can you say what the length and width of the "bottom rectangle" is ?

OpenStudy (kailee1423):

23 and 9

OpenStudy (phi):

and the area of a rectangle is length * width so the area of the bottom side is 23*9

OpenStudy (kailee1423):

Which sides do you do this to?

OpenStudy (phi):

we are finding the area of the sides that are "rectangles" this is the bottom side of the prism |dw:1441657465989:dw|

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