Vaughan Sandoval
11/04/2023 · Junior High School
(4 A swimming pool was built on a rectangular plot of land. The plot of land measured 60 m by 35 m . A 5 m wide path was left around the pool. (a) What was the perimeter of the pool? (b) What was the area of the path?
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Step-by-step Solution
To solve the problem, we first need to determine the dimensions of the swimming pool itself, given that there is a 5 m wide path around it.
### Step 1: Calculate the dimensions of the pool
The dimensions of the rectangular plot of land are:
- Length = 60 m
- Width = 35 m
Since there is a 5 m wide path around the pool, we need to subtract twice the width of the path (5 m on each side) from both the length and the width of the plot to find the dimensions of the pool.
**Length of the pool:**
\[
\text{Length of the pool} = 60 \, \text{m} - 2 \times 5 \, \text{m} = 60 \, \text{m} - 10 \, \text{m} = 50 \, \text{m}
\]
**Width of the pool:**
\[
\text{Width of the pool} = 35 \, \text{m} - 2 \times 5 \, \text{m} = 35 \, \text{m} - 10 \, \text{m} = 25 \, \text{m}
\]
### Step 2: Calculate the perimeter of the pool
The perimeter \( P \) of a rectangle is given by the formula:
\[
P = 2 \times (\text{Length} + \text{Width})
\]
Substituting the dimensions of the pool:
\[
P = 2 \times (50 \, \text{m} + 25 \, \text{m}) = 2 \times 75 \, \text{m} = 150 \, \text{m}
\]
### Step 3: Calculate the area of the path
To find the area of the path, we first calculate the area of the entire plot and then subtract the area of the pool.
**Area of the plot:**
\[
\text{Area of the plot} = \text{Length} \times \text{Width} = 60 \, \text{m} \times 35 \, \text{m} = 2100 \, \text{m}^2
\]
**Area of the pool:**
\[
\text{Area of the pool} = \text{Length} \times \text{Width} = 50 \, \text{m} \times 25 \, \text{m} = 1250 \, \text{m}^2
\]
**Area of the path:**
\[
\text{Area of the path} = \text{Area of the plot} - \text{Area of the pool} = 2100 \, \text{m}^2 - 1250 \, \text{m}^2 = 850 \, \text{m}^2
\]
### Final Answers
(a) The perimeter of the pool is **150 m**.
(b) The area of the path is **850 m²**.
Quick Answer
(a) The perimeter of the pool is 150 m.
(b) The area of the path is 850 m².
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