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Use the area of a triangle formula to find the area of a triangle with a base of 10.5 inches and a height of 4 inches.(1 point) Responses The area of the triangle is 14.5 square inches. The area of the triangle is 14.5 square inches. The area of the triangle is 21 square inches. The area of the triangle is 21 square inches. The area of the triangle is 42 square inches. The area of the triangle is 42 square inches. The area of the triangle is 84 square inches. The area of the triangle is 84 square inches.

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To find the area of a triangle, you can use the formula:

\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \]

In this case, the base is 10.5 inches and the height is 4 inches. Plugging these values into the formula:

\[ \text{Area} = \frac{1}{2} \times 10.5 \times 4 \]

Calculating this step-by-step:

  1. Multiply the base and height: \(10.5 \times 4 = 42\)
  2. Then multiply by \(\frac{1}{2}\): \(\frac{1}{2} \times 42 = 21\)

Thus, the area of the triangle is 21 square inches.