We read your photo as:

Use pi = 3.14. 1. Calculate the area of the outer circle. 2. Calculate the area of inner circle.

Mathematics

ScanSolve AI Answer

Answers

2 parts
1

452.16 cm2452.16 \text{ cm}^2

2

113.04 cm2113.04 \text{ cm}^2

Step-by-step solution

6 steps

Here's how to calculate the areas of the outer and inner circles:

First, we are given that π=3.14\pi = 3.14.

Part 1· 3 steps

Calculate the area of the outer circle

  1. Identify the radius of the outer circle.

    From the diagram, the radius of the outer circle is R=12 cmR = 12 \text{ cm}.

  2. Use the formula for the area of a circle.

    The area of a circle is given by the formula A=πr2A = \pi r^2.

  3. Substitute the values and calculate the area.

    Aouter=πR2A_{outer} = \pi R^2 Aouter=3.14×(12 cm)2A_{outer} = 3.14 \times (12 \text{ cm})^2 Aouter=3.14×144 cm2A_{outer} = 3.14 \times 144 \text{ cm}^2 Aouter=452.16 cm2A_{outer} = \boxed{452.16 \text{ cm}^2}

Part 2

113.04 cm2113.04 \text{ cm}^2

Calculate the area of the inner circle

  1. Determine the radius of the inner circle.

    The diagram shows the outer radius as 12 cm12 \text{ cm}. The inner radius is not explicitly labeled with a numerical value. Based on the visual representation, we will assume the radius of the inner circle (rr) is half the radius of the outer circle.
    So, r=12 cm2=6 cmr = \frac{12 \text{ cm}}{2} = 6 \text{ cm}.

  2. Use the formula for the area of a circle.

    The area of a circle is given by the formula A=πr2A = \pi r^2.

  3. Substitute the values and calculate the area.

    Ainner=πr2A_{inner} = \pi r^2 Ainner=3.14×(6 cm)2A_{inner} = 3.14 \times (6 \text{ cm})^2 Ainner=3.14×36 cm2A_{inner} = 3.14 \times 36 \text{ cm}^2 Ainner=113.04 cm2A_{inner} = \boxed{113.04 \text{ cm}^2}
Was this helpful?

Still stuck on this one?

Ask a follow-up, and the answer starts from this question.

Got a different question?Ask your own question

More Mathematics Questions

QUse 03c0 = 3.14. Calculate the area of the Outer Circle. Calculate the area of the Inner Circle.QFind the Area in the square but outside the circle. 2. Calculate the area and circumference of the…QWhat is the area of a circle with radius 3? Use pi=3.14QWhat is the circumference of each of the following circles? (Take pi = 3.14)QCalculate the radius of a semi-circle given its area is 107.17 m2 and pi is 3.14.
Browse by topic:Geometry
See all Mathematics questions →
Got a syllabus? Photograph it and I'll tell you what's due and what's worth the most.