All categories

3 years ago

Estimate 856 + 457 by first rounding each number to the nearest hundred.

Mathematics

2 answers:

Andreas93 [3]3 years ago

7 0

Answer:

1,400

Step-by-step explanation:

856=900

457= 500

900 + 500 = 1,400

Lisa [10]3 years ago

5 0

Answer:

865 = 900

457 = 500

900 + 500 = 1,400

856 + 457 = 1,313

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2 years ago

What is the volume, in cubic centimeters, of a cylinder with a height of 5 centimeters and a base radius of 10 centimeters, to t

stealth61 [152]

Answer:

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:
$\displaystyle V \approx \boxed{ 1570.8 \ \text{cm}^3 }$