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LenKa [72]
2 years ago
5

What is the ratio of the sector area to the area of the entire circle?

Mathematics
2 answers:
inna [77]2 years ago
4 0

Answer:

One fourth

Step-by-step explanation:

\frac{area \: of \: sector}{area \: of \: circle}  =  \frac{ \frac{ 90 \degree}{360 \degree  } \times \pi {r}^{2}}{ \pi {r}^{2}}  \\  =  \frac{ \frac{1}{4}  \times 1}{1}  \\  =  \frac{1}{4}  \\  = 1 : 4

ElenaW [278]2 years ago
3 0

Answer:

1/5

Step-by-step explanation:

the angle is 72 degrees, ratio is 72:360, simplified is 1/5

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How many 30 degree angles does it take to make 180
aniked [119]
6 i belive let me double check
8 0
3 years ago
Read 2 more answers
The perimeter of an isosceles trapezoid is 28 in and the ratio of lengths of its bases is 5:3. Find the lengths of the sides of
Natalka [10]
The measurements are:
b₁ = 8.4 inches; b₂ = 14 inches; leg₁ = 2.8 inches; leg₂ = 2.8 inches

Let x = length of base and leg

The formula for perimeter of isosceles trapezoid is P = b₁ + b₂ + 2(leg)
Where: b = base

       P = b₁ + b₂ + 2(leg)
     28 = 3x + 5x + 2(x)
     28 = 8x + 2x
28/10 = 10x/10
    2.8 = x

Now, substitute the values:
       P = b₁ + b₂ + 2(leg)
     28 = 3(2.8) + 5(2.8) + 2(2.8)
     28 = 8.4 + 14 + 5.6
     28 = 28

Hence the measurements are:
b₁ = 8.4 inches; b₂ = 14 inches; leg₁ = 2.8 inches; leg₂ = 2.8 inches
8 0
3 years ago
Brian works 4 hours on thursday and gets $95 in tips and 5 hours on friday and gets $178 in tips. If his total for 2 days is $32
MrRa [10]

Answer:

5.25

Step-by-step explanation:

5 0
3 years ago
составь верные равенства и неравенства, используя таблицу: 32×2, 120+253, 900-653, 300×2, 640÷8, 900÷3, 450-350, 45×3
tekilochka [14]
What is your question?

5 0
3 years ago
Work out length of BC
Neporo4naja [7]

Answer:

assume 13 = z \\ 8 =x  \\ bc = y

by phytagorean theorem

{y}^{2}  +  {x}^{2}  = z^{2}

so

bc = y =  \sqrt{ {z}^{2}  -  {x}^{2} } =  \sqrt{169 - 64}   =  \sqrt{105}

3 0
2 years ago
Read 2 more answers
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