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12345 [234]
3 years ago
7

Can someone please help me with this please?

Mathematics
1 answer:
valina [46]3 years ago
4 0

Step-by-step explanation:

Area of the rectangle = 9×6 = 54 m²

Area of the path is also 54 m²

so total area of the bigger rectangle is 54+54 = 108 m²

now the ratio of length to width is 9:6 or, 3:2

so, for 108 m²

(3x)(2x) = 108

6x²=108

x²=18

x=3√2

So length = 3x = 9√2 and width = 2x = 6√2

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Find the diameter, given the circumference of a circle is 40.035 cm.
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Answer:

12.75

Step-by-step explanation:

c = π x d

40.035= 3.14 x d

40.035/3.14 = 12.75

8 0
3 years ago
What’s the answer?and how do you get it
Kay [80]

the solid is made up of 2 regular octagons, 8 sides, joined up by 8 rectangles, one on each side towards the other octagonal face.

from the figure, we can see that the apothem is 5 for the octagons, and since each side is 3 cm long, the perimeter of one octagon is 3*8 = 24.

the standing up sides are simply rectangles of 8x3.

if we can just get the area of all those ten figures, and sum them up, that'd be the area of the solid.

\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ a=5\\ p=24 \end{cases}\implies A=\cfrac{1}{2}(5)(24)\implies \stackrel{\textit{just for one octagon}}{A=60} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{two octagon's area}}{2(60)}~~+~~\stackrel{\textit{eight rectangle's area}}{8(3\cdot 8)}\implies 120+192\implies 312

7 0
3 years ago
∆DEF≈~ STU. If TU-=8, SU = 10, and ST= 4, what is the length of -DE-?
Morgarella [4.7K]

Answer:

if that statement is true, then DE=ST, and ST=4 so your answer should be <u>DE=4</u>

Explanation:

you can tell that they are even from looking at the first statement, it states <u>DE</u>F=<u>ST</u>U, emphasizing on the DE=ST part, it gives your the answer right there because ST=4

3 0
2 years ago
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Artist 52 [7]

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Step-by-step explanation:

7 0
3 years ago
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PLZ HELP AND DONT TELL ME UR OPINON I WANT HELP WITH THE ANSWER
Serhud [2]
It should be 132, area of parallelogram is same as rectangle actually, it just tilted a bit, so is 11 x 12
3 0
2 years ago
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