Question: Find the value of $t$ in rectangle PQRS.
S $7t-72$ P
$3t$
R $4t-36$ Q
t =
1. **State the problem:** We need to find the value of $t$ in rectangle PQRS where the sides are labeled as follows:
- Side $SP = 7t - 72$
- Side $PQ = 3t$
- Side $RQ = 4t - 36$
2. **Recall properties of a rectangle:** Opposite sides of a rectangle are equal in length.
3. **Set up equations:** Since $SP$ is opposite to $RQ$, we have:
$$7t - 72 = 4t - 36$$
Also, $PQ$ is opposite to $SR$, but $SR$ is not given explicitly, so we focus on the first equation.
4. **Solve the equation:**
$$7t - 72 = 4t - 36$$
Subtract $4t$ from both sides:
$$7t - \cancel{4t} - 72 = \cancel{4t} - 36$$
$$3t - 72 = -36$$
Add $72$ to both sides:
$$3t - 72 + 72 = -36 + 72$$
$$3t = 36$$
Divide both sides by $3$:
$$\frac{3t}{\cancel{3}} = \frac{36}{\cancel{3}}$$
$$t = 12$$
5. **Check the value:**
- $SP = 7(12) - 72 = 84 - 72 = 12$
- $RQ = 4(12) - 36 = 48 - 36 = 12$
Both sides are equal, confirming $t=12$ is correct.
**Final answer:**
$$t = 12$$