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3 years ago

Make r the subject of the formula: A= πr²

Mathematics

2 answers:

mart [117]3 years ago

6 0

Firstly, divide both sides by pi: $\frac{A}{\pi}=r^2$

Lastly, square root both sides of the equation and your answer will be $\sqrt{\frac{A}{\pi}}=r$ 

Rufina [12.5K]3 years ago

5 0

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Find the sum 9/16+10/13

Dima020 [189]

Answer:

277/208

Step-by-step explanation:

9/16+10/13

=277/208

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3 years ago

At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. If 100 sixth-grade students pref

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3 years ago

What is the surface area of the cylinder in terms of ? The diagram is not drawn to scale.

Delicious77 [7]

Answer:

SA = 748π in²

General Formulas and Concepts:

Symbols

π (pi) ≈ 3.14

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Surface Area of a Cylinder Formula: SA = 2πrh + 2πr²

r is radius
h is height

Step-by-step explanation:

Step 1: Define

Identify variables

r = 11 in

h = 23 in

Step 2: Find Surface Area

Substitute in variables [Surface Area of a Cylinder Formula]: SA = 2π(11 in)(23 in) + 2π(11 in)²
Evaluate exponents: SA = 2π(11 in)(23 in) + 2π(121 in²)
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Add: SA = 748π in²

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3 years ago

Write an equivalent expression for 7¹² × 7⁴

ira [324]

Answer:

$\huge\boxed{7^{16}}$

Step-by-step explanation:

We can use exponent rules to try and simplify this expression down.

Exponent rules tell us that $x^a + x^b = x^{a+b}$ .

This means that since we have the same base on both terms (7 and 7), we can add the exponents to get a simplified expression.

$12 + 4 = 16$

So our simplified expression is $7^{16}$ .

Hope this helped!

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3 years ago

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kogti [31]

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