Answer:
Step-by-step explanation:
The circumference of a circle is the distance around the circle.
The formula for determining the circumference of the circle is expressed as
Circumference = 2πr
If the circumference of the inner circle is 44ft, the radius of the inner circle would be
2πr = 44
2 × 3.14 × r = 44
r = 44/6.28 = 7
The radius of the outer circle would be 7 + 3 = 10ft
Therefore, the circumference of the outer circle would be
2 × 3.14 × 10 = 62.8 ft
The difference in the circumference of the inner circle and the outer circle is
62.8 - 44 = 18.8 ft
Answer:
3.28 cm
Step-by-step explanation:
The computation is shown below:
The Radius of a circle be R
And, An arc be A
So, the length of the arc would be
L = (A ÷ 360°) × 2 × 3.14 × R
Here R = 6 cm
Angle = 5 minutes and 15 seconds
As we know that the clock has the complete revolution in 60 minutes
So
60 minutes = 360°
As we know that
60 seconds = 1 min
So,
1 = 1min ÷ 60seconds
15 seconds = 15 seconds × ((1 ÷ 60)
= (15 ÷ 60) min
= 0.25 min
So,
5 minutes and 15 seconds
= 5 min + 0.25 min
= 5.25 min
60 minutes = 360°
So,
1 = 360° ÷ 60min
For 5.25min
= (5.25min) × (360° ÷ 60min)
= 31.5°
Then we have A = 31.5°
Now the far would be
L = (31.5° ÷ 360°) × 2 × 3.14 × 6cm
= 3.28 cm
You can use F.O.I.L. for this, which if you don't know stands for first outer inner last, so multiply the first in each parentheses, then the outer, then the inner, then the last. yours would be 3*5+3*√7+(-√7)*5+(-√7)*√7 => 15+3√7-5√7-7 => 8-2√7
Final answer:
8-2√7
Hope I could help :)
Answer:
<h3>B.)Segment BC is proportional to segment EF, and angles A and D are congruent.</h3>
Step-by-step explanation:
If ΔABC and ΔDEF are similar, then
AB is proportional to DE
BC is proportional to EF
CA is proportional to FD
and
angles A and D are congruent
angles B and E are congruent
angles C and F are congruent
Answer:
maybe 30 cause i cant tell if this is a trick question or not
Step-by-step explanation:
30 cause 420 divided by 15 =30
i dont really know the answer to this