Question

Another question sooooo easy will mark brainleast promise!!!

Answer 1

Answer:

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Step-by-step 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!