Answer:
The total amount of paper needed by Cara for the project is 390.9 inch².
Step-by-step explanation:
Dimensions of the 1st rectangle is 20 inches × inches
That is, the dimensions are 20 inches × inches
As, Area of a rectangle = Length × Width
So, we have,
Area of the 1st rectangle =
i.e. Area of the 1st rectangle =
i.e. Area of the 1st rectangle = 285 inch²
Further, it is given that,
Dimensions of the 2nd rectangle is inches × inches
That is, the dimensions are inches × inches
Then, we get,
Area of the 2nd rectangle =
i.e. Area of the 2nd rectangle =
i.e. Area of the 2nd rectangle = 105.9 inch²
Thus, the total area of the rectangles = 285 + 105.9 = 390.9 inch²
<em>Hence, the total amount of paper needed by Cara for the project is 390.9 inch².</em>