How do you write 390% as a fraction or mixed number in simplest form?

Mathematics

2 answers:

vladimir2022 [97]3 years ago

7 0

390% converts to a decimal by moving the decimal point 2 spaces up.

390% = 3.9

To convert decimal to a fraction- the whole number is over 1 and the tenths are over 10. (hundredths over 100, and it goes on)

Mixed fraction answer = 3 9/10

Improper fraction = 39/10

Solnce55 [7]3 years ago

4 0

Improper fraction = 39/10

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The volume of the cylinder is approximately 1570.8 cm³.

General Formulas and Concepts:
Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Volume Formula [Cylinder]:
$\displaystyle V = \pi r^2 h$

r is radius
h is height

Step-by-step explanation:

Step 1: Define

Identify given variables.

h = 5 cm

r = 10 cm

Step 2: Find Volume

[Volume Formula - Cylinder] Substitute in variables:
$\displaystyle V = \pi (10 \ \text{cm})^2 (5 \ \text{cm})$
[Order of Operations] Evaluate:
$\displaystyle V = 500 \pi \ \text{cm}^3$
Approximate:
$\displaystyle V \approx \boxed{ 1570.8 \ \text{cm}^3 }$