Find the area of the following plane figure.
Find the altitude of a triangle whose area is 100 cm2 and whose base is 20 cm.
Altitude =
10 cm
A = bh/2
100 = 20h/2
200 = 20h
10 = h
To find the altitude of a triangle, you can use the formula:
Area = (base * altitude) / 2
Given that the area of the triangle is 100 cm² and the base is 20 cm, we can plug these values into the formula and solve for the altitude.
100 = (20 * altitude) / 2
To find the altitude, we can rearrange the equation:
200 = 20 * altitude
Now, divide both sides of the equation by 20:
200 / 20 = altitude
The altitude is equal to 10 cm.
To find the altitude of a triangle, we can use the formula for the area of a triangle.
The formula for the area of a triangle is:
Area = (base * altitude) / 2
In this case, we are given that the area is 100 cm^2 and the base is 20 cm. We need to find the altitude.
Substituting the given values into the formula, we have:
100 = (20 * altitude) / 2
To isolate the altitude, we can multiply both sides of the equation by 2:
200 = 20 * altitude
Next, we divide both sides of the equation by 20 to solve for the altitude:
altitude = 200 / 20
Simplifying the equation gives:
altitude = 10 cm
Therefore, the altitude of the triangle is 10 cm.