Ask question

Ask question

All categories

4 years ago

15

The formula for the area of a circle is A=pir^2. Find the area of a circle with a diameter of 6.4 centimeters. Use a calculator

and round your answer to the nearest square centimeter.

1 answer:

Advocard [28]4 years ago

3 0

A=pi(3.2)^2= 32.1699087728
A=32cm^2

You might be interested in

What is the area of a triangle with a base of 1.3cm and height of 0.5 cm?

sammy [17]

Answer:

0.325 cm²

Step-by-step explanation:

A = $\frac{1}{2}$ bh = $\frac{1}{2}$ *1.3*0.5 = 0.325 cm²

6 0

3 years ago

Read 2 more answers

Suppose that x and y vary inversely and that y = 5 when x = 1. What is y when x = 15?

LiRa [457]

Answer:

Y=1/3

Step-by-step explanation:

X=k/y

So let's make k the subject of formula

k=xy

x=1,y=5

So let's substitute

k=1×5

k=5

So we are to determine the value for y when x is 15

So let's solve

Y=k/x

Y=5/15

Y=1/3

Y=0.333333~0.3

7 0

3 years ago

Can someone help me this please? Problems 3 and 4. Number 3 is the "Find x" and Number 4 is the Yield sigh.

Nataly [62]

Answer:

I am gonna take a guest and say <em>178</em> for number 3. And for number 4, the answer is <em>44.</em>

Step-by-step explanation:

For number 3, I added 76 and 102 which equals 178. For number 4, I put n+6+3n-10=180 because its a triangle. Do the math and you get n=44. Correct me if I am wrong; I tried my best.

6 0

3 years ago

Multiply k(5j+2) what is the answer to this please

AfilCa [17]

Use the distributive property to get 5kj+2k

8 0

3 years ago

The time a basketball player spends in the air when shooting a basket is called the "hang time." the vertical leap l measured i

Marina86 [1]

Dénote l the vertical leap, then the given equation can be written like this:
$l(t)=4t^2\\\text{Since one inch equate 0.0833333 feet then 44 inches equate }\\44\times 0.0833333=3.6feet\\\text{Add to 33 feet like this:}\\33+3.6=36.6feet\\\text{Now we have to solve the equation:}\\4t^2=36.6\\\text{Divide over 4 we get:}\\t^2= \frac{36.6}{4}=9.15\\\text{Take the square root we get:}\\t=\sqrt{9.15}=3$

The hang time equates then 3 seconds

7 0

3 years ago