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Bogdan [553]
3 years ago
10

Find the surface area of the composite figure. 6cm 5 cm 20cm 4cm 12cm 6cm​

Mathematics
1 answer:
Crazy boy [7]3 years ago
7 0

Answer:

644 cm²

Step-by-step explanation:

Surface area of the composite figure = surface area of the large rectangular prism + surface area of the small rectangular prism - 2(area of the surface of the small rectangular prism that joins the larger prism)

✔️Surface area of the large rectangular prism = 2(LW + LH + WH)

L = 6 cm

W = 5 cm

H = 20 cm

Surface area = 2(6*5 + 6*20 + 5*20)

= 500 cm²

✔️Surface area of the small rectangular prism = 2(LW + LH + WH)

L = 6 cm

W = 4 cm

H = 12 cm

Surface area = 2(6*4 + 6*12 + 4*12)

= 288 cm²

✔️area of the surface of the small rectangular prism that joins the larger prism = L*W

L = 12 cm

W = 6 cm

Area = 12*6

= 72 cm²

✅Surface area of the composite figure = 500 + 288 - 2(72)

= 644 cm²

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evablogger [386]

Answer:

Doesn't exist

Step-by-step explanation:

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Hence, the slope of line doesn't exist.

4 0
3 years ago
Please help!<br><br> In your own words, explain how to bisect an angle
yKpoI14uk [10]

Answer:

Place compass point on the vertex of the angle (point B), Stretch the compass to any length that will stay ON the angle, Swing an arc so the pencil crosses both sides (rays) of the given angle, Place the compass point on one of these new intersection points on the sides of the angle.

Step-by-step explanation:

6 0
3 years ago
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The half-life of iron-52 is approximately 8.3 hours.How much of a 13 gram sample of iron-52 would remain after 8 hours? Round to
Alexandra [31]

6.665 grams of the 13 grams remain after 8 hours.

<h3>How much of a 13 gram sample of iron-52 would remain after 8 hours?</h3>

The decay equation for the 13 grams of iron-52 is:

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Where N is the amount of iron-52, and t is the time in years.

Where we used the fact that the half-life is exactly 8.3 hours.

Now, the amount that is left is given by N(8h), so we just need to replace the variable t by by 8 hours, so we get:

N(8h) = 13g*e^{(-ln(2)/8.3h)*8h}} = 6.665g

So 6.665 grams of the 13 grams remain after 8 hours.

If you want to learn more about half-life:

brainly.com/question/11152793

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5 0
1 year ago
The students in the cooking club brought sugar to class they each brought 3,4,5and 6cups of sugar respectively they divided the
geniusboy [140]

Answer:

if there is 4 students then each student gets about 4 1/2 cups of sugar.

Step-by-step explanation:

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3 0
3 years ago
SOMONE HELP ME I HAVE <br> TO DO THIS AFTER SCHOOL PLS ASAP!!!
Scrat [10]

Answer:

1 no

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3 no

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6 -0.5

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Step-by-step explanation:

1 no because the y overlaps

2 not sure

3 it over laps

4 it never overlaps

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6 y=-0.5x+1

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for the 5-7 you can type that into demos and get more info

y=mx+b

m is the slope and b is y intercept

3 0
2 years ago
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