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4 years ago

7

The length of a rectangle is 3cm more than twice it's width. The perimeter of the rectangle is 65 square cm. Determine the lengt

h and width of the rectangle

1 answer:

Marianna [84]4 years ago

5 0

Its 195 square centimeters or I probably will get it wrong

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Can someone help me with this 1 math problem. I posted a picture of the question.

NeX [460]

Step-by-step explanation:

For conical part: h = 14 in & r = 9 in

For hemispherical part: r = 9 in

$V_{prop} = V_{cone} +V_{hemisphere} \\ = \frac{1}{3} \pi {r}^{2} h + \frac{2}{3} \pi {r}^{3} \\ =\frac{1}{3} \times 3.14 \times {9}^{2} \times 14 + \frac{2}{3} \times 3.14 \times {9}^{3} \ \\ = 1,186.92 + 2 \times 3.14 \times 243 \\ = 1,186.92 + 1,526.04 \\ = 2,712.96 \: {inch}^{3} \\$

Another way:

$V_{prop} = V_{cone} +V_{hemisphere} \\ = \frac{1}{3} \pi {r}^{2} h + \frac{2}{3} \pi {r}^{3} \\\\=\frac{1}{3} \pi {r}^{2}(h+2r)\\\\= \frac{1}{3}\times 3.14\times {9}^{2}(14+2\times 9)\\\\= \frac{1}{3}\times 3.14\times 81(14+18)\\\\= 3.14\times 27\times 32\\\\= 2,712.96\: {inch} ^3$

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3 years ago

#8 Dylan, Mike and Jeremy had $171. Mike had twice as much money as Dylan. Jeremy had three times as much money as Mike. How muc

kkurt [141]

Answer:

#8 85.50

Step-by-step explanation

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3 years ago

Select the choice that translates the following verbal phrase correctly to algebra: the product of k and m

aliina [53]

K x m or km. Product means the result of multiplying.

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4 years ago

You can read 45 pages of your new book in 2 hours. how much an you read in 3

erastova [34]

Answer:

67.5 pages

Step-by-step explanation:

45 divided by 2 is 22.5, so you would do 3x22.5=67.5

Hope this helped!

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3 years ago

Best answer gets Brainliest!!!

Murrr4er [49]

Answer:

The table C

Step-by-step explanation:

when you multiply the x number in the table c by 0.3 you get the same answer as the one in the y column. The constant of proportionality is the value that stays constant in the ratio. Since when you multiply each number in the x column by 0.3 and you always get the number in the y column it shows that the table c is correct.

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3 years ago