All categories

3 years ago

A DVD has a diameter of 34 centimeters. What is the area of the DVD? Round your answer to the nearest

Mathematics

2 answers:

alex41 [277]3 years ago

4 0

Answer:

Area of the circle = $907.46\;cm^2$

Step-by-step explanation:

Diameter of the DVD = $34\;cm$

$Radius=\dfrac{34}{2}=17\;cm$

Area of the circle= $\pi \times r^2$

As,

$\pi =\dfrac{22}{7}=3.14$

Area is:

$=3.14\times 17\times 17\\\\=3.14\times 289\\\\=907.46\;cm^2$

Area of the circle is: $907.46\;cm^2$

nata0808 [166]3 years ago

3 0

Answer:

907.46cm

Step-by-step explanation:

Area of Cirlce = πr^2

R= 17

R^2= 289

289 x 3.14 = 907.46

907.46cm

You might be interested in

If a 7% saline solution and a 4% saline solution are mixed to make 500 milliliters of a 5% saline solution, how much of each sol

Bogdan [553]

The answer is 167 milliliters of 7% solution and 333 milliliters of 4% solution x + y = 500 x = 500 - y 0.07x + 0.04y = 25 (substitute 500 - y for x) 0.07(500 - y) + 0.04y = 25 35 - 0.07y + 0.04y = 25 -0.03y + 35 = 25 -0.03y = -10 y = 333.333... y [ = about 333 x = 500 - y = 500 - 333 = 167 hope it helps

3 0

3 years ago

Simplify this expression. 20.25 – 9 + 11 о 1 4 0 18.75 0 21? 0 40.75

Greeley [361]

Answer:

$21\frac{3}{4}$

Step-by-step explanation:

Step 1: Add the numbers.

20.25 can also be expressed as $20\frac{1}{4}$ , because $\frac{2025}{100}$ = $\frac{81}{4}$ = $20\frac{1}{4}$ . So if we add $20\frac{1}{4}$ and 11, we would get $31\frac{1}{4}$

Step 2: Solve

$31\frac{1}{4} -9\frac{1}{2}$

Subtract the whole numbers

$31-9=21$

Combine the fractions

This means addition. Also, since our denominators are not the same value, we have to find the LCM (Least Common Denominator): What do 2 and 4 have in common that they can divide themselves by? 4. We know this because 2 divided by 4 is 2, and 4 divided by 4 is 1, so they can both divide themselves by 4.

$\frac{5}{4}-\frac{1}{2}$