### 1.8 Formulas

Problem #

Problem Statement

Problems Similar To

1.

Find the area in square inches of a triangle whose base (b) is 9 inches and whose height (h) is 5 feet using the formula Area = (1/2)*b*h. (Note: 1 foot is 12 inches).

\begin{equation}\frac{1}{2} \times 9 \times 12 \times 5\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 = 6 feet, W = 10 feet, and H = 8 feet.

\begin{equation}2 \times (6 \times 10+6 \times 8+10 \times 8)\end{equation}

3.

Find the distance (d) in miles traveled by a person whose speed (r) is 7 miles/hour for 15 minutes using the formula d = r*t.

\begin{equation}\frac{15}{60} \times 7\end{equation}

4.

It takes 1/10 of an hour to travel 2 miles to work, what is the average speed in miles/hour?

\begin{equation}10 \times 2\end{equation}

5.

On winter day, the highest temperature was 8 degrees F, and the lowest was -5 degrees F. What is the variation in the day's temperature?

\begin{equation}8-(-5)\end{equation}

6.

You are making candles for your friends. A mold for the candles costs $\$10 $and wax to make one candle costs$ \$7$. You make 10 candles. Find total cost.

\begin{equation}10+7 \times 10\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 5 degrees C. Convert this temperature to degrees F.

\begin{equation}\frac{9}{5} \times 5+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 14 inches of snow on the ground. If the snow continues melting at this rate, how much snow will be on the ground in 2 hours?

\begin{equation}14-(\frac{2 \times 60}{100})\end{equation}