What will be the area of circle if radius is 7 cm?

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What will be the area of circle if radius is 7 cm?

154 sq. cm
Hence, the area of the given circle with radius 7 is given by 154 sq. cm and the circumference is given by 44 cm respectively. So, the correct answer is “the area of the given circle with radius 7 is given by 154 sq.

How do you find the area of a circle with a radius of 7?

The area of a circle is pi times the radius squared (A = π r²).

What is 7cm in area?

The area of a square is A = s², where s is the length of one of the 4 congruent sides of the square. A = 49 cm² is the area of a square of side 7 cm in length.

What is the circumference of a 7cm radius circle?

approximately 43.98 cm .
∴ , the circumference is approximately 43.98 cm .

How do you find the radius of 7cm?

Given, r=7 cm Circumference of circle =2πr =2×722×7 =44 cm

  1. Given, r=7 cm.
  2. Circumference of circle =2πr.
  3. =44 cm.
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How many circles are in the radius of 7cm?

∴10 circle of radius 7 cm can be cut from a paper of length 50cm and width 32cm. hope this helps you. mark as brainliest.

How do we find the radius of a circle?

How to Find the Radius of a Circle?

  1. When the diameter is known, the formula is Radius = Diameter/ 2.
  2. When the circumference is known, the formula is Radius = Circumference/2π.
  3. When the area is known, the formula for the radius is Radius = ⎷(Area of the circle/π).

What is the area of 2cm circle?

A= 12.57cm2 rounded off to two decimal places.

How do you find the area of a 8cm circle?

The area of a circle is equal to Pi π times the radius r squared. Substitute in the value of the radius r=8 into the formula for the area of a circle. Pi π is approximately equal to 3.14 .

What is diameter of 7cm?

Here,diameter is 7 cm. So radius is 7/2=3.5 cm.

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What is the PI of 7cm?

3.14
If you want an exact answer, you can multiply 7 by the value of π , that is ≈3.14 .

How do you draw a 7 cm diameter circle?

  1. Draw a circle of radius r=3. 5cm with center O.
  2. Draw AOB diameter.
  3. Taking AO as base and vertex A draw perpendicular to AO.
  4. Also, taking OB as base and vertex B, draw perpendicular to OB.
  5. XX′ and YY′ are the tangents at the diametrical end.

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