Two legs of a right-angled triangle are equal to 20 and 21, find the area of this triangle.
| March 11, 2021 | education
Let’s use the formula for the area of a right-angled triangle S = a * b / 2, where a and b are the legs of this right-angled triangle.
According to the condition of the problem, the lengths of the legs of this right-angled triangle are 20 and 21, therefore, the area of this right-angled triangle is:
S = a * b / 2 = 20 * 21/2 = 10 * 21 = 210.
Answer: the area of this right-angled triangle is 210.
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