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denis23 [38]
3 years ago
9

Find the area of this circle. Use 3 for pi

Mathematics
2 answers:
Svetlanka [38]3 years ago
6 0

Answer:

A = 147 cm²

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Geometry</u>

Area of a Circle Formula: A = πr²

  • <em>r</em> is radius

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

<em>r</em> = 7 cm

<u>Step 2: Find Area</u>

  1. Substitute in variables [Area of a Circle Formula]:                                         A = 3(7 cm)²
  2. Evaluate exponents:                                                                                         A = 3(49 cm²)
  3. Multiply:                                                                                                             A = 147 cm²
ohaa [14]3 years ago
5 0

Step-by-step explanation:

given pi value= 3

radius=7

we know,

area of a circle(A)= πr²

= 3×7²

=147cm²

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Given that a species of beetles grows 32% every year.

So growth rate is given by

r=32%= 0.32


Given that 100 beetles are released into a field.

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