Question

Another question sooooo easy will mark brainleast promise!!!

Answer 1

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Explanation:

Answer 2

Hello!

The answers are:

For the first image: Total surface area is
`880cm^(2)`

For the second image: Total surface area is
`465.6cm^(2)`

Why?

First Image

There are three rectangles to take into consideration for the total surface area calculation:

First rectangle,

`Length=10cm+8cm+10cm+8cm=36cm\\Width=20cm\\ Area=36cm*20cm=720cm^(2)`

Second and third rectangles have equal dimensions,so:

`Area=2(8cm*10cm)=160cm^(2)`

So, the total surface area will be

`TotalArea=720cm^(2)+160cm^(2)=880cm^(2)`

Second Image

There is: a rectangle composed of three rectangles and 4 right triangles, so:

Rectangle,

`Length=12cm+12cm+12cm=36cm\\Width=6cm\\Area=36cm*6cm=216cm^(2)`

Triangles,

`Height=10.4cm\\Base=6cm\\Area=4(10.4cm*6cm)=4*62.4cm^(2)=249.6cm^(2)`

So, the total surface area will be:

`TotalArea=RectangleArea+TrianglesArea=216cm^(2)+249.6cm^(2)\\TotalArea=465.6cm^(2)`

Have a nice day!