3 years ago

The radius of a circle is 7 centimeters. What is the area?

Mathematics

2 answers:

natita [175]3 years ago

8 0

I believe it's 153.9

krek1111 [17]3 years ago

7 0

Answer:

49开

Step-by-step explanation:

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A beach ball has a radius of 9 inches. find the volume of the beachball, in cubic inches and round the answer to the nearest who

lesya692 [45]

V=4/3pi(r^3)
V=4/3pi(9^3)
V=3,054 inches^3

Think this is right

7 0

2 years ago

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I'll mark as brainliest if it lets me;-;<br>please answer B. & C. with solution:)

san4es73 [151]

Answer:

B. AC = 22, BC = 22, AB = 44

C. AC = 30, BC = 30, AB = 60

Step-by-step explanation:

$radius \: \overline {OR} \perp chord \: \overline {AB}$ at C. (given)

$\therefore AC = BC$ (perpendicular dropped from the center of the circle to the chord bisects the chord)

$\therefore 2x - 6 = x + 8$

$\therefore 2x - x= 6 + 8$

$\therefore x= 14$

$AC = 2x-6=2(14)-6=28-6= 22$

$BC= x + 8=14 + 8= 22$

AB = AC + BC = 22 + 22 = 44

$radius \: \overline {OR} \perp chord \: \overline {AB}$ at C. (given)

$\therefore BC = AC$ (perpendicular dropped from the center of the circle to the chord bisects the chord)

$\therefore 7x-5=4x+10$

$\therefore 7x - 4x= 5 + 10$

$\therefore 3x= 15$

$\therefore x= \frac{15}{3}$

$\therefore x= 5$

$AC = 4x+10=4(5)+10=20+10= 30$

$BC= 7x - 5=7(5)-5=35-5= 30$

AB = AC + BC = 30 + 30 = 60

7 0

2 years ago

Find one value of x for which f(x)=1 and find f(-2)

loris [4]

Step-by-step explanation:

f(x) = 1

f(-2) = 1

Constan function f(n) = k, n and k elemen real

3 0

2 years ago

John made 3 more free throws than Jose. The

jeyben [28]

25-3=22

22/2 = 11

John made 14 free throws while Jose made 11.

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3 years ago

3/4w=9 what does w equal?

Studentka2010 [4]

3/4 w = 9

multiply by 4/3 on both sides

4/3 x 3/4 w = 9 x 4/3

w = 9 x 4/3

Simplify that

w = 3 x 4

w = 12

So your final answer is

$\boxed{\bf{w=12}}$

5 0

3 years ago

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