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umka21 [38]
3 years ago
10

PLEASE HELP ME WITH THANKS :)

Mathematics
2 answers:
Maurinko [17]3 years ago
8 0

Answer

12855.04 ft³

Step-by-step explanation:

regular Octagon consists of 8 congruent triangles

B = (13.28 x 11) / 2 x 8=584.32

V = BH = 584.32 x 22 = 12855.04

LiRa [457]3 years ago
4 0

Answer: 1936 cubic feet.

Step-by-step explanation:

Base × Height . The height is 22 feet. To find the perimeter of the base you multiply 11ft by 8 because there are 8 sides. This equals 88. 88×22 is 1936. I hope this helps.

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Hi guys, can you please answer this question i'm giving out brainliest and 30 points:)
Ainat [17]

Answer:

1 centimet

Step-by-step explanation:

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3 years ago
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If you get $0.75 everyday for 7 years and already have $4.35 (not counting leap years) how much money would you have at the end
Oksanka [162]

Step-by-step explanation:

7 years

leap years in 7 years:- 1

7 minus 1 equals to 6

6 calendar years to days:- 2190 days

so, $0.75 times 2190 = $1642.5

1642.5 plus $4.35 equals to 1646.85

7 0
3 years ago
Another one pls it’s so f hard
Katyanochek1 [597]
Answer

Area = 35cm^2

Explanation

Area of a parallelogram = b•h

In this question, we are given the values:

H = 5cm

B = 7cm

Therefore, the area is 5 x 7

= 35 cm^2

~Hoodini, Hope this helps.
5 0
3 years ago
How many square metre of carpeting are needed to cover a floor that measures 8m by 5m​
grigory [225]

Answer:

40 meters squared

Step-by-step explanation:

8 * 5 = 40

5 0
3 years ago
Cam's tent (shown below) is a triangular prism. Find the surface area, including the floor, of his tent.
SVEN [57.7K]

The surface area of the tent is 21.4 m²

Step-by-step explanation:

To find the surface area of a prism you must calculate:

1. The perimeter of the base

2. The area of the base

3. The height of the prism

We have a triangular prism:

Its base is an equilateral triangle of side length 2 m and height 1.7 m

The height of the prism is 3 m

∵ The surface are of the prism is:

   S.A = perimeter of the base × height + 2 × area of the base

∵ The perimeter of the equilateral triangle = 3 × length of a side

∵ The length of the side = 2 m

∴ The perimeter of the base = 3 × 2 = 6 m

∵ The area of the triangle = \frac{1}{2} × base × height

∵ The length of the base of the triangle = 2 m

∵ The height of the triangle = 1.7 m

∴ The area of the base = \frac{1}{2} × 2 × 1.7 = 1.7 m²

∵ S.A = perimeter of the base × height + 2 × area of the base

∵ The perimeter of the base = 6 m

∵ The area of the base = 1.7 m²

∵ The height of the prism = 3 m

∴ S.A = 6 × 3 + 2 × 1.7

∴ S.A = 18 + 3.4

∴ S.A = 21.4 m²

The surface area of the tent is 21.4 m²

Learn more:

You can learn more about surface area of a solid in brainly.com/question/12613605

#LearnwithBrainly

3 0
3 years ago
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