malachi and talia are refreshing a triangular flower bed at their school. they want to know the area, so they know the amount of material they need. they know two adjoining sides measure 26 feet and 32 feet, and the angle formed between those sides measures 98 degrees. what is the area of their triangular flower bed to the nearest square inch

2 answers

To find the area of a triangle when you know the lengths of two sides and the included angle, you can use the formula:

\[ \text{Area} = \frac{1}{2} \times a \times b \times \sin(C) \]

where \( a \) and \( b \) are the lengths of the two sides, and \( C \) is the included angle in degrees.

In this case:

  • \( a = 26 \) feet
  • \( b = 32 \) feet
  • \( C = 98 \) degrees

Now, we can substitute these values into the formula.

First, we need to find \( \sin(98^\circ) \). Using a calculator:

\[ \sin(98^\circ) \approx 0.985 \]

Now, we can calculate the area:

\[ \text{Area} = \frac{1}{2} \times 26 \times 32 \times \sin(98^\circ) \] \[ \text{Area} = \frac{1}{2} \times 26 \times 32 \times 0.985 \] \[ \text{Area} = \frac{1}{2} \times 832 \times 0.985 \] \[ \text{Area} = 416 \times 0.985 \approx 409.36 \text{ square feet} \]

To convert this area to square inches, recall that there are 144 square inches in a square foot:

\[ \text{Area in square inches} = 409.36 \text{ sq ft} \times 144 \text{ sq in/sq ft} \] \[ \text{Area in square inches} \approx 58943.84 \text{ square inches} \]

Rounding this to the nearest square inch, we get:

\[ \text{Area} \approx 58944 \text{ square inches} \]

Thus, the area of the triangular flower bed is approximately 58944 square inches.

its inches^2