F. Katrina dove 14 feet down in the water and then went up 7 feet.

Mathematics

1 answer:

Mandarinka [93]2 years ago

8 0

Answer: -7

Step-by-step explanation:

Down = -

Up = +

Therefore we know to subtract 14 and add 7,

next we do 0 - 14 = -14,

after that we do -14 + 7 = -7,

so we get -7 as the answer.

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Harman [31]

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The surface area is the lateral area plus the area of the 2 bases. The base is a triangle. (area = 1/2 bh)

Since there are two identical bases, the total area of the base is just 3x9 = 27

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