Find the area of a right-angled triangle if its legs are 1, 8 dm and 5 dm.
| August 23, 2021 | education
From the condition, the length of two legs of a right-angled triangle is known to be 1.8 dm and 5 dm. In order to find the area of a right-angled triangle, let’s recall the formula for finding the area of a right-angled triangle through the legs of a triangle.
Formula for the area of a right-angled triangle.
S = 1/2 * a * b, where a and b are the legs of a right triangle.
The area of a right-angled triangle is half the product of its legs.
Substitute and calculate:
S = 1/2 * 1.8 * 5 = 4.5 dm2 area of a right-angled triangle.
Answer: S = 4.5 dm2.
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