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Vedmedyk [2.9K]
2 years ago
8

PLEASE ANSWER!

Mathematics
1 answer:
luda_lava [24]2 years ago
8 0
Let R be the greater radius and r be the smaller radius

A) Area of the sidewalk = R^2 - r^2 - This can be the expression

B) = 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
=*40

That was the simplified expression

Answer = 3.14 * 40 = 125.6m^2
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6 0
3 years ago
PLS HELP ME I NEED IT
OLEGan [10]

Step-by-step explanation:

the area = (\frac{1}{2}) (18)(4)\\ = 36ft^{2}

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8 0
3 years ago
HELP
Sunny_sXe [5.5K]

You did not provide any question. I will give general advice.

Pythagorean Theorem: a² + b² = c²

If you know two sides, you know ll three sides.

A house sits in the shade.

The house is 18 feet tall. The shadow is 24 feet long. What is the hypotenuse of this triangle?

We know a and b here! a=18, b=24.

18 * 18 = 324.

24 * 24 = 576.
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The square root of 900 is what will be your answer:

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I hope this helps!

7 0
2 years ago
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V125BC [204]
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3 years ago
What is the measure of the vertex angle
maw [93]

Answer:

Vertex angle = 124°

Step-by-step explanation:

m<BAC = m<BCA (base angles of isosceles ∆ are congruent)

7x + 1 = 5x + 9

Collect like terms

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divide both sides by 2

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Vertex angle = 124°

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3 years ago
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