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prohojiy [21]
2 years ago
13

Find the surface area, in square centimeters, of

Mathematics
1 answer:
nydimaria [60]2 years ago
8 0

The surface area of the hemisphere with radius r = 19 cm. is 3400.62 square centimeters

<h3>How to determine the surface area?</h3>

The radius is given as:

r = 19

The surface area of a hemisphere is:

Area = 3πr²

So, we have:

Area = 3 * 3.14 * 19²

Evaluate

Area = 3400.62

Hence, the surface area of the hemisphere is 3400.62 square centimeters

Read more about surface areas at:

brainly.com/question/6613758

#SPJ1

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Tara standing 20 feet from a tree and the angle of elevation is 72°. About how tall is the tree?
Zinaida [17]

Answer:

Approx 61.554 feet

Step-by-step explanation:

Since we are dealing with the opposite and adjacent sides, we will use tangent as our ratio.

Since the angle of elevation is 72 degrees, the left side of our equation is tan(72).

The right side of the equation is opposite over adjacent.

x/20

Set these equal to each other.

tan(72) = x/20

Simplify.

20 tan(72)=x

20(3.078) = x

x is approximately 61.554.

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3 years ago
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Answer:

32ft by 20ft

Step-by-step explanation:

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3 years ago
An Olympic hurdler was part of the way through her race when she fell. She got up and completed the final 353535 meters of her 1
guajiro [1.7K]

hurdler falled down before the 353535 steps of 100100100 race.

we need to find where she fell down

so we need subtract 353535 from 100100100

100100100-353535=99746565

she falled at 99746565 step before completing the race

5 0
3 years ago
Can some one please help me find the answer?
sergiy2304 [10]
516.14mm I think that’s the answer
6 0
3 years ago
Read 2 more answers
What does the expression (x+3)(9) represent
Dominik [7]

Answer:

evaluate 9(x+3)

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Step-by-step explanation:

i think i am sorry if i am wrong

3 0
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