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3 years ago

Determine the surface area of this

Mathematics

2 answers:

Anvisha [2.4K]3 years ago

8 0

209.22 because A= pi *r * l + pi r^2

Savatey [412]3 years ago

3 0

Answer:

209.22cm²

Step-by-step explanation:

A=πrl+πr2

l=r2+h2

Solving forA

A=πr(r+h2+r2)=π·4·(4+122+42)≈209.21889cm²

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Plz find c) arc XYR thank you

Butoxors [25]

XYR=36 hope this helps I actually don't know if it is right so I'm so sry if it is wrong so sry

4 0

3 years ago

100 POINTS AND BRAINLIEST

zysi [14]

Answer:

8 square units and $\frac{40}{3}$ square units

Step-by-step explanation:

The area of the triangle ABC is 24 square units.

1. Triangles ABC and FBG are similar with scale factor $\frac{1}{3},$ then

$\dfrac{A_{\triangle FBG}}{A_{\triangle ABC}}=\dfrac{1}{9}\Rightarrow A_{\triangle FBG}=\dfrac{1}{9}\cdot 24=\dfrac{8}{3}\ un^2.$

2. Triangles ABC and DBE are similar with scale factor $\frac{2}{3},$ then

$\dfrac{A_{\triangle DBE}}{A_{\triangle ABC}}=\dfrac{4}{9}\Rightarrow A_{\triangle DBE}=\dfrac{4}{9}\cdot 24=\dfrac{32}{3}\ un^2.$

3. Thus, the area of the quadrilateral DFGE is

$A_{DFGE}=A_{\triangle DBE}-A_{\triangle FBG}=\dfrac{32}{3}-\dfrac{8}{3}=8\ un^2.$

and the area of the quadrilateral ADEC is

$A_{ADEC}=A_{\triangle ABC}-A_{\triangle DBE}=24-\dfrac{32}{3}=\dfrac{40}{3}\ un^2.$

4 0

3 years ago

Read 2 more answers

Please help simple alebgra! Write an equation representing the translation of f(x) = 7x + 3 down 4 units.

Anni [7]

9514 1404 393

Answer:

g(x) = 7x -1

Step-by-step explanation:

The y-coordinate of a function tells how many units the function value lies above the x-axis. Translating that value down 4 units is the same as subtracting 4 from the function value.

g(x) = f(x) -4

g(x) = 7x +3 -4

g(x) = 7x -1

5 0

3 years ago

maria buys 8 1/3 pounds of beef to make tacos for a party .She uses 5/9 pound of beef for each toco. how many tacos can maria ma

Olin [163]

Just do 8 1/3 divided by 5/9 or

25/3 / 5/9

25/3 * 9/5 = 5/1 * 3/1 = 15

So 15 tacos

* = times

/ = divided by

7 0

3 years ago

In the figure below A,E,F and C lie in plane X. Points B and D do not lie in plane X. For each part below, fill in the blanks to

pav-90 [236]

Answer:

Step-by-step explanation:

(a). B, C and D are the distinct points that are collinear.

(b). FC and BD are the distinct lines that intersect each other at a point C.

(c). E, F, C and A are the points that are coplanar (on the same plane).

(d). Another name for plane X is plane AEF. (Since a plane is defined by the three distinct points on the same plane.

4 0

3 years ago