2 years ago

Which choice best represents the area of a circle with a diameter of 16 cm. Use ≈3.14

Mathematics

2 answers:

Rudiy272 years ago

8 0

Answer:

it is 25.12

Step-by-step explanation:

Amiraneli [1.4K]2 years ago

3 0

Answer:

it is 803.84 centimeters squared

Step-by-step explanation:

area of a circle is r^2* 3.14

=16*16*3.14

=803.84

You might be interested in

(posting this for my friend) SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER

Pani-rosa [81]

Answer:

Step-by-step explanation:

the 90 degree angle is subtracted by 45 and the answer is.

4 0

2 years ago

In triangle abc, m of acb = 90, cd is perpendicular to ab , m of acd is 60. and bd is 5 cm. find ad

weeeeeb [17]

Let us draw a picture to make the things more clear.

Attached is the image.

We have been given that

$\angle acd = 60 ^{\circ}$

Therefore, we have

$\angle dcb =90- 60= 30 ^{\circ}$

Now, in triangle bcd, we have

$\tan30 = \frac{5}{cd}\\
\\
\frac{1}{\sqrt 3}=\frac{5}{cd}\\
\\
cd=5\sqrt 3$

Now, in triangle acb, we have

$tan 60 = \frac{ad}{5\sqrt3} \\
\\
\sqrt 3= \frac{ad}{5\sqrt3}\\
\\
ad= 5\sqrt3 \times \sqrt 3\\
\\
ad= 5\times 3\\
\\
ad=15$

Thus, ad is 15 cm.

4 0

2 years ago

X^2 -18x +81=0 factor it

nasty-shy [4]

Answer:

x=9

Step-by-step explanation:

81 is the product of -9 & -9. -9-9=-18. Therefore, (x-9)^2=0, and you get that x=9.

6 0

2 years ago

A Russian mathmatician named Christian Goldbach came up with a theory that every even number can be written as the sum of two od

belka [17]

1 + 5 = 6
3 + 3 = 6

3 + 47 = 50
7 + 43 = 50
13 + 37 = 50
19 + 31 = 50

4 0

2 years ago

A polygon is composed of two or more line segments?

Rama09 [41]

The smallest polygon has three line segments, it is triangle.

7 0

2 years ago

Read 2 more answers