20. A rectangular yard is 20 feet by 15 feet. The yard is covered with grass except for an 8.5 - t . square flower garden. How much grass is in the yard?

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To find out how much grass is in the yard, we need to calculate the total area of the yard and then subtract the area of the flower garden.

Given:
- The yard is 20 feet by 15 feet.
- The flower garden is 8.5 feet by 8.5 feet.

1. Calculate the total area of the yard:
$$ \text{Total Area} = \text{Length} \times \text{Width} $$

2. Calculate the area of the flower garden:
$$ \text{Area of Flower Garden} = \text{Side Length} \times \text{Side Length} $$

3. Subtract the area of the flower garden from the total area of the yard to find the area of the grass:
$$ \text{Area of Grass} = \text{Total Area} - \text{Area of Flower Garden} $$

Let's calculate the area of the grass.
Calculate the value by following steps:
- step0: Calculate:
  $$20\times 15-8.5\times 8.5$$
- step1: Multiply the numbers:
  $$300-8.5\times 8.5$$
- step2: Multiply the numbers:
  $$300-72.25$$
- step3: Subtract the numbers:
  $$227.75$$
The area of the grass in the yard is 227.75 square feet.
The area of grass in the yard is 227.75 square feet.

A rectangular yard is 20 feet by 15 feet. The yard is
covered with grass except for an 8.5 - t . square flower
garden. How much grass is in the yard?

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