A = π r^2
A = 9^2 <span>π
</span>A = 81<span>π

if using </span>π = 3.14 then

A = 3.14 x 81 = 254.47 ft^2

answer: 81π ft^2 or 254.47 ft^2

hope that helps

6 0

3 years ago

Whats the step by step answer to this equation i got -25 but its supposed to be positive not negative

andreev551 [17]

Answer:

Step-by-step explanation:

- 6/5x = -30 ⇒ multiply both sides by -1
6/5x = 30 ⇒ multiply both sides by 5
6x = 5*30
x = 150/6 ⇒ divide both sides by 6
x = 25 ⇒ answer

6 0

3 years ago

Read 2 more answers

A random sample of 10 subjects have weights with a standard deviation of 9 8753 kg What is the variance of their weights? Be sur

hammer [34]

Answer: The variance of their weights = 9,752,155,009 kg.

Step-by-step explanation:

The variance is the square of the standard deviation . it measures the spread between data values in a data set.

So if standard deviation of 10 subjects = 98753 kg

Then, variance = $(9 8753 )^2\ kg=9,752,155,009\ kg$

Hence, the variance of their weights = 9,752,155,009 kg.

8 0

3 years ago

The isosceles triangle theorem states that if two sides of a triangle are congruent, then the angles opposite those sides are __

frez [133]

The answer is “C” supplementary I think.

5 0

3 years ago