2 years ago

Find the area and the circumference of a circle with radius 3 cm.

Mathematics

1 answer:

pshichka [43]2 years ago

6 0

1. Observe problem

Solve for the area and Circumference of a circle who's radius is 3 cm

Area for circle formula:

pi*r^2=

9pi

I simplicity is needed, 9 pi is around

28.2743338823cm^2

Circumference for circle formula: 2*pi*r

which is

6pi

if simplicity is again needed, its around

18.8495559215cm

You might be interested in

Help on this please show my work ?

Mandarinka [93]

Factor the denominator
x^2+3x-10
(x+5)(x-2)

(x-2)/((x+5)(x-2))

The x-2 in the numerator and denominator cancel out.

Final answer: x+5

5 0

3 years ago

The length of a rectangle is 55 inches more than the width. the perimeter is 4242 inches. find the length and the width of the r

faust18 [17]

L = W + 55
2L + 2W = 4242

L + W = 2121
(W + 55) + W = 2121
2W + 55 = 2121

W = 1033 inches L = 1088 inches

6 0

2 years ago

How do you find the length of each leg of an isosceles right triangle whose hypotenuse is 4 cm?

allsm [11]

The length of hypotenuse of an isosceles right triangle with two equal legs each 4 cm is given by Pythagorean theorem as follows.

√42+42.

=√32.

=4√2.

4√2 cm.

6 0

2 years ago

Evaluate 9p^2 for p=4 . When p=4,9p^2=?

Licemer1 [7]

Answer:

144

Step-by-step explanation:

Put the number where the variable is and do the arithmetic.

9p^2 = 9·4^2 = 9·16

9p^2 = 144 . . . . when p=4

6 0

3 years ago

Solve 8(x+2)=36.......

brilliants [131]

We have to use the Distributive Property in this equation.
By the Distributive Property,
$8(x+2)=36
$
becomes
$8x+16=36.$
Now we need to isolate x. Remember PEMDAS?
$8x=20$
$x=20/8$
Simplify the right side.
$x=10/4$
$x=5/2$

3 0

3 years ago

Read 2 more answers