Mathematics: Asquare pyramid is shown below i need this done soon and now so the brainlest points are high

Asquare pyramid is shown below i need this done

speris1443

16.01.2022

$\large\boxed{S.A.=61.25\ cm^2}$

Step-by-step explanation:

We have the square and four congruent triangles.

The formula of an area of a square with side a:

$A_{square}=a^2$

The formula of an area of a triangle:

$A_{triangle}=\dfrac{bh}{2}$

b - base

h - height

SQUARE:

$A_{square}=(3.5)^2=12.25\ cm^2$

TRIANGLE:

$A_{triangle}=\dfrac{(3.5)(7)}{2}=\dfrac{24.5}{2}=12.25\ cm^2$

Surface Area of the square pyramid:

$S.A.=A_{square}+4A_{triangle}$

Substitute:

$S.A.=12.25+4(12.25)=12.25+49=61.25\ cm^2$

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hma9153

25.10.2022

Step-by-step explanation:

c = (b/2)² because b = 2c

If b is negative, then c = (-b/2)² , and x² - bx + c = (x-c)²

If b is an odd number, then c will be a fraction.

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