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Liula [17]
3 years ago
6

Find the area of a semi circle when the radius is 10cm. give the answer in term of pi

Mathematics
2 answers:
algol133 years ago
3 0

Answer:

A = 50π 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>Geometry</u>

Area of a Circle: A = πr²

  • <em>r</em> is radius

Step-by-step explanation:

*Note: A semicircle is <em>half</em> a full circle.

<u>Step 1: Define</u>

Radius <em>r</em> = 10 cm

<u>Step 2: Solve for </u><em><u>A</u></em>

  1. Rewrite Area of Circle Formula:                                                                      A = 0.5πr²
  2. Substitute in <em>r</em> [Area of Semicircle Formula]:                                                  A = 0.5π(10 cm)²
  3. [Area] Evaluate exponents:                                                                              A = 0.5π(100 cm²)
  4. [Area] Multiply:                                                                                                  A = 50π cm²
Sauron [17]3 years ago
3 0
3.14195 is pi sooooo yea that’s pi
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