In triangle ABC, if a = 7, b = 24, and c = 25, what is the area of the triangle?

Practice Questions

Q1
In triangle ABC, if a = 7, b = 24, and c = 25, what is the area of the triangle?
  1. 84
  2. 96
  3. 120
  4. 144

Questions & Step-by-Step Solutions

In triangle ABC, if a = 7, b = 24, and c = 25, what is the area of the triangle?
  • Step 1: Identify the sides of the triangle. Here, a = 7, b = 24, and c = 25.
  • Step 2: Calculate the semi-perimeter (s) of the triangle using the formula s = (a + b + c) / 2.
  • Step 3: Substitute the values into the formula: s = (7 + 24 + 25) / 2 = 28.
  • Step 4: Use Heron's formula to find the area: Area = √[s(s-a)(s-b)(s-c)].
  • Step 5: Calculate (s-a), (s-b), and (s-c): (28-7) = 21, (28-24) = 4, (28-25) = 3.
  • Step 6: Substitute these values into the area formula: Area = √[28 * 21 * 4 * 3].
  • Step 7: Calculate the product inside the square root: 28 * 21 = 588, then 588 * 4 = 2352, and finally 2352 * 3 = 7056.
  • Step 8: Find the square root of 7056 to get the area: Area = √7056 = 84.
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