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What is the area of a circle with a diameter of 4x? Please I need help rn

User Kiliantics
by
8.8k points

2 Answers

10 votes

Answer:

4πx² square units

Step-by-step explanation:

Area of a circle

  • [ A = πr² ]

The formula uses the radius of the circle, but we have the diameter. Remember the relation :

  • Diameter = 2 x Radius
  • 4x = 2 x Radius
  • Radius = 4x/2 = 2x

Now, we can solve.

  • ⇒ A = πr²
  • ⇒ A = π(2x)²
  • ⇒ A = 4πx² square units
User JWo
by
8.6k points
3 votes

Answer:

12.57x² units²

Step-by-step explanation:

area of circle: πr² ["r" denotes radius]

diameter: 2r

Given,

diameter: 4x

radius: 4x/2 = 2x

Area of circle:

πr²

π(2x)²

π(4x²)

4πx²

12.57x²

User Banica
by
8.8k points

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