### 1.8 Formulas

Problem #

Problem Statement

Problems Similar To

1.

Find the area in square inches of a triangle whose base (b) is 6 inches and whose height (h) is 6 feet using the formula Area = (1/2)*b*h. (Note: 1 foot is 12 inches).

\begin{equation}\frac{1}{2} \times 6 \times 12 \times 6\end{equation}

2.

Find the surface area of a box in square feet using the formula S = 2(L*W + L*H + W*H) if L = 7 feet, W = 2 feet, and H = 3 feet.

\begin{equation}2 \times (7 \times 2+7 \times 3+2 \times 3)\end{equation}

3.

Find the distance (d) in miles traveled by a person whose speed (r) is 4 miles/hour for 15 minutes using the formula d = r*t.

\begin{equation}\frac{15}{60} \times 4\end{equation}

4.

It takes 1/9 of an hour to travel 2 miles to work, what is the average speed in miles/hour?

\begin{equation}9 \times 2\end{equation}

5.

On winter day, the highest temperature was 5 degrees F, and the lowest was -3 degrees F. What is the variation in the day's temperature?

\begin{equation}5-(-3)\end{equation}

6.

You are making candles for your friends. A mold for the candles costs $\$8 $and wax to make one candle costs$ \$5$. You make 9 candles. Find total cost.

\begin{equation}8+5 \times 9\end{equation}

7.

Degrees Celsius C can be converted to degrees Fahrenheit F using the expression (9/5)*C + 32 = F. The hottest recorded day in Place P was 2 degrees C. Convert this temperature to degrees F.

\begin{equation}\frac{9}{5} \times 2+32\end{equation}

8.

After a recent snowfall, the snow on the ground in a shaded area is melting at a rate of 1/100 inches/minute. Currently, there are 12 inches of snow on the ground. If the snow continues melting at this rate, how much snow will be on the ground in 3 hours?

\begin{equation}12-(\frac{3 \times 60}{100})\end{equation}