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3 years ago

Area of a circle with a radius of 7

Mathematics

2 answers:

kati45 [8]3 years ago

8 0

Answer:

48π

Step-by-step explanation:

Area = π r^2

So, let's substitute.

Area = π 7^2

Area = 49π

zheka24 [161]3 years ago

5 0

Answer:

I'm pretty sure the answer would be 153.94

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Answer:

Step-by-step explanation:

5 × 4 = 20 (rectangle)

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2 years ago

If m<10=77,m<47 and m<16=139, find the measure of each missing angle

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2 years ago

What is the volume of the cone below? ):

svetoff [14.1K]

Answer:

A. 112π units³

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

Volume of a Cone Formula: $\displaystyle V = \frac{1}{3} \pi r^2h$

r is radius
h is height

Step-by-step explanation:

Step 1: Define

Radius r = 4

Height h = 21

Step 2: Find Volume

Substitute in variables [Volume of a Cone Formula]: $\displaystyle V = \frac{1}{3} \pi (4)^2(21)$
Evaluate exponents: $\displaystyle V = \frac{1}{3} \pi (16)(21)$
Multiply: $\displaystyle V = \frac{16 \pi}{3}(21)$
Multiply: $\displaystyle V = 16 \pi \cdot 7$
Multiply: $\displaystyle V = 112 \pi$