The area of a triangle is 3.99cm2 . If the base is 4.2 cm, how do you find the height ?
I get
height = 1.9 cm
check:
area = (1/2)(4.2)(1.9) = 3.99
area = (1/2) base x height
3.99 = (1/2)(4.2)(height)
height = 2(3.99)/4.2
= ...
To find the height of a triangle, you can use the formula:
Area = (1/2) * base * height
In this case, you know the area is 3.99 cm² and the base is 4.2 cm. We can rearrange the formula and solve for the height.
1. Start with the formula: Area = (1/2) * base * height.
2. Substitute the given values: 3.99 cm² = (1/2) * 4.2 cm * height.
3. Simplify the formula: 3.99 cm² = 2.1 cm * height.
4. Divide both sides of the equation by 2.1 cm: height = 3.99 cm² / 2.1 cm.
5. Calculate the height: height ≈ 1.9 cm.
Therefore, the height of the triangle is approximately 1.9 cm.