2 years ago

Find the area of a circle with a circumference of 31.4 units. help me please

Mathematics

1 answer:

hram777 [196]2 years ago

4 0

Answer:

Area = 78.5

Step-by-step explanation:

31.4 = 2 x pi X r

r = 31.4/(2xpi) = 31.4(2 x 3.14) = 5

Area = pi x r^2 = 3.14 X 5^2 =3.14 x 25 = 78.5 units^2

You might be interested in

Simplify Fraction improper 13/8

Soloha48 [4]

Answer:

Exact Form:

13 /8

Decimal Form:

1.625

Mixed Number Form:

1 5/ 8

8 0

2 years ago

Hanna bought 5 lottery cards with $25. How much is each card worth?

stepladder [879]

Each card is worth $5

8 0

3 years ago

Read 2 more answers

Construct a polynomial function with the following properties: fifth degree, 5 is a zero of multiplicity 4, −4 is the only other

mario62 [17]

5(x-5)^4(x+4)
you raise x-5 to the 4th power because 5 has a multiplicity of 4

5 0

2 years ago

Read 2 more answers

Find the slope of the line that passes through the points E(-1, 3) and F(-2, -3)

Nesterboy [21]

Answer=6

Formula for slope:

$slope= \frac{y _{2}-y _{1} }{x _{2}-x _{1} }= \frac{-3-3}{-2-(-1)} = \frac{-6}{-1}=6$

slope=6

4 0

2 years ago

the population of mastertown was 23,000 in 2012. assume that mastertowns population increased at a rate of 2% per year. write an

vazorg [7]

Exponential growth is

F=P(1+r)^t
F=future amount
P=present amount
r=rate
t=time in years

rate=2%=0.02
therefor the equation is
f(x)=23,000(1+0.02)^x
f(x)=23,000(1.02)^x
where x=time in years from 2012

6 0

3 years ago

Read 2 more answers