Question

click the arrows to choose an answer from each menu.
the expression, ( 3left( \frac{1}{2} \times 10 \times 13
ight) + left( \frac{1}{2} \times 10 \times 8.7
ight) ).
choose...
in the next step, when rain equates ( 3left( \frac{1}{2} \times 10 \times 13
ight) + left( \frac{1}{2} \times 10 \times 8.7
ight) ) to ( 3(65) + 43.5 ), he
choose...
rain choose... the surface area correctly. the surface area of the triangular
pyramid is choose... square inches.

Explanation:

Step1: Calculate first parenthetical term

$\frac{1}{2} \times 10 \times 13 = 65$

Step2: Calculate second parenthetical term

$\frac{1}{2} \times 10 \times 8.7 = 43.5$

Step3: Identify the simplification step

Rain replaces each parenthetical expression with its calculated value, so he uses the order of operations (PEMDAS/BODMAS) to simplify the parentheses first.

Step4: Compute total surface area

$3(65) + 43.5 = 195 + 43.5 = 238.5$

Answer:

1. Choose: simplifies the parentheses first (evaluates the products inside the parentheses)
2. Choose: 238.5
3. Choose: square inches