We know that
diameter=radius*2
radius=diameter/2
area of circle=pi*r²
length of circumference=2*pi*r
so
Part 1) <span>4 inches circumference
</span>4=2*pi*r--------> r=4/(2*pi)-----> r=2/pi-----> r=0.64 in
diameter=2*0.64-----> 1.28 in
area=pi*0.64²------> 1.29 in²
the answers Part 1) are
a) radius=0.64 in
b) diameter=1.28 in
c) area=1.29 in²
Part 2) <span>10 ft circumference
10=2*pi*r-----> r=10/(2*pi)----> r=5/pi-----> 1.59 ft
diameter=2*1.59------> 3.18 ft
area=pi*1.59</span>²-----> 7.94 ft²
the answers Part 2) are
a) radius=1.59 ft
b) diameter=3.18 ft
c) area=7.94 ft²
Part 3) <span>18 yards diameter
radius=18/2-----> 9 yd
circumference=2*pi*9-----> 56.52 yd
area=pi*9</span>²-----> 254.34 yd²
the answers part 3) are
radius=9 yd
circumference=56.52 yd
area=254.34 yd²
Part 4) <span>16 cm circumference
</span>16=2*pi*r-----> r=16/(2*pi)----> r=8/pi-----> 2.55 cm
diameter=2*2.55------> 5.10 cm
area=pi*2.55²-----> 20.42 cm²
the answers Part 4) are
a) radius=2.55 cm
b) diameter=5.10 cm
c) area=20.42 cm²
Part 5) <span>19 mm diameter
</span>radius=19/2-----> 9.5 mm
circumference=2*pi*9.5-----> 59.66 mm
area=pi*9.5²-----> 283.39 mm²
the answers part 5) are
radius=9.5 mm
circumference=59.66 mm
area=283.39 mm²
Part 6) <span>12 inches diameter
</span>radius=12/2-----> 6 in
circumference=2*pi*6-----> 37.68 in
area=pi*6²-----> 113.04 in²
the answers part 6) are
radius=6 in
circumference=37.68 in
area=113.04 in²
Part 7) <span>28 ft circumference
</span>28=2*pi*r-----> r=28/(2*pi)----> r=14/pi-----> 4.46 ft
diameter=2*4.46------> 8.92 ft
area=pi*4.46²-----> 62.46 ft²
the answers Part 7) are
a) radius=4.46 ft
b) diameter=8.92 ft
c) area=62.46 ft²
<span>
Part 8) </span><span>6 yards diameter
</span>radius=6/2-----> 3 yd
circumference=2*pi*3-----> 18.84 yd
area=pi*3²-----> 28.26 yd²
the answers part 8) are
radius=3 yd
circumference=18.84 yd
area=28.26 yd²
Part 9) <span>18 cm circumference
</span>18=2*pi*r-----> r=18/(2*pi)----> r=9/pi-----> 2.87 cm
diameter=2*2.87------> 5.74 cm
area=pi*2.87²-----> 25.86 cm²
the answers Part 9) are
a) radius=2.87 cm
b) diameter=5.74 cm
<span>c) area=25.86 cm</span>²<span>
</span>
Answer:
The answer is C. 62^
Branliest please
Step-by-step explanation:
Step-by-step explanation:
M is the midpoint of AB. First, find the coordinates of M.
M = ((4 + 0) / 2, (2 + 4) / 2)
M = (2, 3)
Now find the slope of MC:
m = (15 − 3) / (8 − 2)
m = 12 / 6
m = 2
Find the slope of AB:
m = (4 − 2) / (0 − 4)
m = 2 / -4
m = -1/2
The slopes are opposite inverses, so the two are indeed perpendicular.
Answer:
7
Step-by-step explanation: