The area of circles
1 answer:
Answer:
Formula for the area of a circle;
<h2>A = πWhere 'π' represents pi(3.14 or 22/7), and 'r' represents the radius which is being squared.
Plug in the radius into this formula:-
A = π
- <em>Note: I will be using 3.14 as pi(π).</em>
A = 3.14(4^2)
A = 3.14(16)
A = <u>50.24 centimetres</u> is the area for this circle.
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Answer:
Step-by-step explanation:
Area of triangle = 0.5 × Base × Height
→ Substitute in the values
200 = 0.5 × 5x × 5x
→ Simplify
200 = 12.5x²
→ Divide both sides by 12.5
16 = x²
→ Square root both sides
4 = x ∴ x = 4