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3 years ago

A rectangular solid has sides of 7 cm + 9 cm + 11 cm what is its surface area

Mathematics

2 answers:

alina1380 [7]3 years ago

6 0

Your answer would be: 693.

Explanation:

When finding the area in a problem use L×W×H.

That being said, you now have to multiply the L×W×H (7x9x11)

7 × 9 × 11 = 693

So the answer would be 693 because, if you are finding an area you use L×W×H to find your area.

trasher [3.6K]3 years ago

5 0

Answer:

478

Step-by-step explanation:

Surface Area=2(ab+ac+bc)

SA=2((7*9)+(7*11)+(9*11))

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3 years ago

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Answer: Choice C

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=======================================================

Work Shown:

We can use the distance formula.

A = (x1,y1) = (2,2)

B = (x2,y2) = (1,-3)

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(2-1)^2 + (2-(-3))^2}\\\\d = \sqrt{(2-1)^2 + (2+3)^2}\\\\d = \sqrt{(1)^2 + (5)^2}\\\\d = \sqrt{1 + 25}\\\\d = \sqrt{26}\\\\d \approx 5.0990195\\\\d \approx 5.10\\\\$

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