A semi-circular plate has a radius of 35cm,find it area
(1/2) pi r^2
A = pi * r^2
A = 3.14 * 35^2
A = 3,846.5 sq. cm
3,846.5 / 2 = ?
Asemi_circleplatehasaradiusof35cm,finditsarea
A semi- circular plate has a radius of 35cm. Find it area
To find the area of a semi-circular plate with a radius of 35 cm, you can follow these steps:
1. Recall the formula for the area of a circle: A = πr^2, where A represents the area and r represents the radius.
2. Divide the circle into two equal halves. Since you have a semi-circle, the area formula needs to be modified.
3. The area of a semi-circle is half of the area of a full circle. So, divide the result from Step 1 by 2: A = (πr^2)/2.
4. Substitute the given radius into the formula: A = (π * (35 cm)^2)/2.
5. Calculate the area: A = (π * 1225 cm^2)/2.
6. Simplify the expression: A = 612.5π cm^2.
7. If you want the exact value of the area, leave the answer as A = 612.5π cm^2. Otherwise, if you want an approximation, you can use the value of π as approximately 3.14 or use a calculator for a more precise value.
Therefore, the area of the semi-circular plate is approximately (612.5 * 3.14) cm^2 or 1922.25 cm^2.