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azamat
2 years ago
7

Find the surface area of a sphere Show all the work

Mathematics
1 answer:
IrinaVladis [17]2 years ago
5 0

Answer:

452cm2

Step-by-step explanation:

surface area of sphere =4πr2

so 4π62 which equals to 452.39.

hope this helps u understand:)

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I need help asap!!!
gizmo_the_mogwai [7]

Answer:

x = 9

Step-by-step explanation:

-5(1 + 1x) = -50

-5 + -5x = -50

-5 + -5x + 5 = -5x

-50 + 5 = -45

-5x = -45

-5x / -5 = x

-45 / -5 = 9

x = 9

5 0
2 years ago
The area of the shaded region of circle O is 9π m2
blsea [12.9K]
For full circle area is π * R² [here R = radius],
for a sector of circle with angle β, area will be = (β/2) * R², β is in radian,
here let β = 22.5° = (π * 22.5/180) = π/8 radian,
now [(π/8)/2] * R² = 9π, [π/16] * R² = 9π
R² = 9 * 16 = 144, 
R = √144 = 12 m
5 0
3 years ago
Anyone i need help with this
DIA [1.3K]

Answer:

Step-by-step explanation:

a1=90-a2

a1=90-30=60

a2 is opposite 30 and opposite angles are equal so

a2=30

The sum of the angles of a triangle are equal to 180 degrees.

a2+a3+70=180

a3+30+70=180

a3=100=180

a3=80

4 0
3 years ago
Cory earns 52.50 in 7 hours. find the unit rate
faust18 [17]

divide the two:

52.50 / 7 = 7.50 per hour

6 0
3 years ago
Read 2 more answers
7. Find the distance between the points (13, 8) and (-12, 6)
Alik [6]

9514 1404 393

Answer:

  √629 ≈ 25.08

Step-by-step explanation:

The distance formula is useful for this.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((-12 -13)² +(6 -8)²) = √(625 +4) = √629 ≈ 25.08

The distance between the points is about 25.08 units.

3 0
2 years ago
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