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Linda is adding padding to all of the surfaces inside her attic for extra warmth in the winter.
She needs to find the approximate surface area of the attic, including the walls, floor, and
ceiling. The attic is in the shape of a triangular prism. Linda draws the net and writes
the expression below to represent the surface area of the attic. Are Linda's net and
expression correct?

Linda Is Adding Padding To All Of The Surfaces Inside Her Attic For Extra Warmth In The Winter She Needs To Find The Approximate Surface Area Of The Attic Inclu class=

Sagot :

We have that Linda's net and expression incorrect

With the Expression of the surface area of attic

[tex]45(40+25+25)+1/2(40*15)[/tex]

Surface area is

[tex]X=4050+600\\\\X=4650ft^2[/tex]

So for the Question is Are Linda's net and  expression correct?

The answer is No Because

Her expression for the triangles are incorrect

[tex]1/2(40*15)[/tex]

Instead of

[tex]1/2*40*(15)[/tex]

Hence

Linda's net and expression incorrect

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