Find the area of the partial circle, use 22/7 for pi.

1.) radius = 27 cm
find the area of 1/5 of the circle
2.) diameter = 29 ft
find the area of 1/3 of the circle.

Help!! Please!! Thanks!! :D

1.)

A = [(22/7) * 27^2] / 5

2.)
A = [(22/7) * 14.5^2] / 3

The diameter of the first circle is x cm. If the diameter of the second circle is 1/4 x cm .Then , what is the radius of the second circle?

To find the area of a partial circle, we need to use the formula for the area of a full circle and then multiply it by the fraction that represents the portion of the circle we are interested in.

1.) To find the area of 1/5 of the circle with a radius of 27 cm, we first need to calculate the area of the full circle. The formula for the area of a circle is A = π*r^2, where A is the area and r is the radius.

Plugging in the given radius of 27 cm and using the value 22/7 for π, the formula becomes:
A = (22/7) * (27 cm)^2

Now, to find the area of 1/5 of the circle, we multiply the total area by the fraction 1/5:
Area of 1/5 of the circle = (1/5) * [(22/7) * (27 cm)^2]

To evaluate this expression, perform the calculations inside the parentheses and then multiply by 1/5.

2.) To find the area of 1/3 of the circle with a diameter of 29 ft, we first need to calculate the area of the full circle. The formula for the area of a circle is A = π*r^2, where A is the area and r is the radius.

Since we are given the diameter, which is twice the radius, we can calculate the radius by dividing the diameter by 2:
Radius = 29 ft / 2 = 14.5 ft

Plugging in the radius of 14.5 ft and using the value 22/7 for π, the formula becomes:
A = (22/7) * (14.5 ft)^2

Now, to find the area of 1/3 of the circle, we multiply the total area by the fraction 1/3:
Area of 1/3 of the circle = (1/3) * [(22/7) * (14.5 ft)^2]

To evaluate this expression, perform the calculations inside the parentheses and then multiply by 1/3.

Remember to convert the final area values to the appropriate units and round off if necessary.