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21.06.2019 •
Mathematics
The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.
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Ответ:
Height: 15 inches.
Base: 24 inches.
Step-by-step explanation:
1. Based on the information shown in the problem, you can write the following expression:
Where b is the base and h is the height.
2. Substitute the expression into the formula fo calculate the area of a triangle and solve for h:
3. By factoring, you obtain:
4. Choose the positive value. Then, the height is 15 inches.
5. The lenght of the base in inches is:
Ответ:
C=2piR
A=C⇒ piR^2=2piR
R=2cm