All categories

3 years ago

The surface area of a sphere is 4pr 2. find the surface area of a sphere with a radius of 10 ft.

Mathematics

2 answers:

ki77a [65]3 years ago

8 0

4 $\pi r^{2}$ , r = 10
4 $\pi 10^{2}$ = 1256.64 $ft^{2}$

Romashka [77]3 years ago

8 0

4, r = 10
4 = 1256.64

You might be interested in

A movie theater sells student tickets for $5 and adult tickets for $10. On Saturday night, 2,500 people go to the theater and ti

Vesna [10]

I want to say 1,250 went to the movie theater

5 0

3 years ago

Use the compound interest formula A =P(1 + r) t and the given information to solve for r.

Dmitry [639]

Answer:

Rounding to nearest hundredths gives us r=0.06.

So r is about 6%.

Step-by-step explanation:

So we are given:

$A=P(1+r)^t$

where

$A=2300$

$P=1600$

$t=6$ .

$A=P(1+r)^t$

$2300=1600(1+r)^6$

Divide both sides by 1600:

$\frac{2300}{1600}=(1+r)^6$

Simplify:

$\frac{23}{16}=(1+r)^6$

Take the 6th root of both sides:

$\sqrt[6]{\frac{23}{16}}=1+r$

Subtract 1 on both sides:

$\sqrt[6]{\frac{23}{16}}-1=r$

So the exact solution is $r=\sqrt[6]{\frac{23}{16}}-1$

Most likely we are asked to round to a certain place value.

I'm going to put my value for r into my calculator.

r=0.062350864

Rounding to nearest hundredths gives us r=0.06.

8 0

4 years ago

Please help me I’m confused

Vesnalui [34]

I think it’s b I hope I’m sosososososos sorry if it ain’t

8 0

3 years ago

In the figure, angle D measures 45° and angle E measures 87°. What is the measurement of angle H?

scZoUnD [109]

Hat means y + z = 180.

y is thrice than z means y = 3 * z. 

replace y with 3 * z in the equation of y + z = 180 to get 3 * z + z = 180. 

combine like terms to get 4 * z = 180. 

solve for z to get z = 180 / 4 = 45 degrees. 

since y = 3 * z, then y = 3 * 45 = 135 degrees. 

y = 135
z = 45 

y + z = 180 becomes 135 + 45 = 180
y = 3 * z = 135 = 3 *45 

solution is confirmed to be good.

3 0

3 years ago

Read 2 more answers

Find the distance and midpoint between (3,6) and (5,11)

zepelin [54]

Answer:

((3+5)/2,(6+11)/2)=(4,8.5)

4 0

3 years ago