Question

Find the area of the circumference of a circle with diameter 7yd use the value 3.14 as pie

Answer 1

Answer:

Given:

• Diameter of a circle is 7 yards.
• Pi (π) = 3.14

To Find:

• The area and the Circumference of the circle.

Solution:

We know,

Circumference of circle = 2πr² / πd

where,

• π = 3.14
• Diameter (d) = 7 yd

➮ 3.14 × 7

➮ 21.98

Therefore, Circumference of the circle is 21.98yd.

Area of Circle = πr²

where,

• π = 3.14
• Radius (r) = d/2 = 7/2 = 3.5 yd

➮ 3.14 × (3.5)²

➮ 3.14 × 12.25

➮ 38.48

Therefore, Area of the circle is 38.48yd.

_____________________

Additional Information:

CSA = Curved Surface Area

TSA = Total Surface Area

★ CSA of Cylinder = 2πrh

★ TSA of Cylinder = 2πr(r+h)

★ Volume of Cylinder = πr²h

★ CSA of Cone = πrl

★ TSA of Cone = πr(l+r)

★ Volume of Cube = (side)³

★ CSA of Cube = 4(side)²

★ TSA of Cube = 6(side)²

★ Volume of Cuboid = lbh

★ CSA of Cuboid = 2(l+b)h

★ TSA of Cuboid =2(lb+bh+hl)

★ TSA & CSA of Sphere = 4πr²