b. 9x2
c. 18x2
d. 8x4
b) H = A + 2LW/2L + 2W
c) H = A - 2LW/4LW
d) H = A/2L + 2W - 2LW
Answer:
Step-by-step explanation:
To find the area of a semicircle, you can follow these steps:
1. Recall that the formula for the area of a circle is A = πr^2, where A represents the area and r represents the radius.
2. Since a semicircle is half of a circle, the formula for the area of a semicircle is A = (πr^2)/2.
3. In this case, the radius of the semicircle is given as 3cm. Plug this value into the formula: A = (π * 3^2)/2.
4. Simplify the equation: A = (π * 9)/2.
5. The final answer, in terms of π, is A = 4.5π square centimeters.
Therefore, the area of the semicircle with a radius of 3cm is 4.5π square centimeters
The shortest distance from a point to a straight line is the measurement of the line segment which connects the point to the straight line. This line segment should be perpendicular to the line and is thus called the perpendicular distance.