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arsen [322]
3 years ago
13

Can anybody help me solve for surface area? (Formula=add all the areas of the faces)

Mathematics
1 answer:
TiliK225 [7]3 years ago
6 0

Answer:

230.3cm^2

Step-by-step explanation:

surface area: sum of all faces

base: 12 x 2.5 = 30cm^2

back: 84 cm ^2

cross section x 2 = 7 x 2.5 = 17.5

use Pythagoras theorem to find the width of slope: 7^2 + 2.5^2 = 49 + 6.25 = 55.25. square root of 55.25 = 7.4

so, area of slope : 7.4 x 12 = 88.8cm^2

sum of all areas: 114 + 106.3  = 230.3

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2 years ago
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2 years ago
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Mariulka [41]

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2 years ago
The numbers 1-4 are each written on an index card. The 4 cards are put into a bag and 2 of them are drawn at random. What is the
devlian [24]

Answer:

Step-by-step explanation:

Write a list of all possible outcomes

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Is there an easier way?

You might be able to get the 12 easier.

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3 years ago
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PtichkaEL [24]

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Your answer is exactly 120 feet

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