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Liono4ka [1.6K]
3 years ago
9

A required question

Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0

Answer:

18ft

Step-by-step explanation:

AC = CD = BA

CD = 2CE

BD = BA + AC + CD = 2CE + 2CE + 2CE

= 6CE

CE = 3

6 × 3 = 18

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Part A: Describe how you can decompose this shape into triangles. (2 points)
kvv77 [185]

Answer:

A: 6 triangles with height 10.4 inches each and base 12 inche

B: 62.4 square inches

C: 374.4 square inches

Step-by-step explanation:

Part A: You can form a triangle by connecting E to the top of the segment and connecting the top of the segment to D. Recreating this with each section will create 6 triangles with height 10.4 inches each and base 12 inches.

Part B: The area of a triangle is A = 1/2b*h. Substitute h = 10.4 and b = 12.

A = 1/2*10.4*12 = 62.4

Part C: There are 6 triangles each with area 62.4. So the area of the whole figure will be 6*62.4 = 374.4.

8 0
4 years ago
Tonya wraps 2 presents in 3 minutes. At this rate, how many presents with Tonya wrap in 15 minutes?
Alisiya [41]

Answer:

10! because 3 to get 15 is 5 and 2×5 is 10

4 0
3 years ago
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What is the fraction as a decimal?
Sergio [31]
Divide the numerator by the denominator to find out
4 0
3 years ago
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cylinder has radius 2.5 cm and lateral area 20π cm2.20π cm2. 20 pi . cm squared , . What is the surface area of the cylinder in
uysha [10]
\bf \textit{lateral area of a cylinder}\\\\
LA=2\pi rh\qquad 
\begin{cases}
r=radius\\
h=height\\ -----\\
LA=20\pi \\
r=2.5
\end{cases}\implies 20\pi =2\pi \cdot 2.5h
\\\\\\
\cfrac{20\pi }{2\cdot 2.5\pi }=h\implies \boxed{4=h}\\\\
-------------------------------\\\\
\textit{total surface area of a cylinder}\\\\
SA=2\pi r(h+r)\implies SA=2\pi \cdot 2.5(4+2.5)
7 0
4 years ago
If the area of a square is 36 units and one side of the square is 2a units, find the value of a. ​
Sedaia [141]

Answer:

3

Step-by-step explanation:

2a * 2a = A

2a * 2a = 36

we know that 6 * 6 = 36

so 2a would be equal to 2 * 6/2

so a = 3

7 0
3 years ago
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