Answer:
A = 0.041138659 Sq. Mi.
Explanation:
now I'm guessing that mark's backyard is GIGANTIC
and according to the info the question gave I know his back yard is also a Rectangle, knowing this we can safely say the formula to find the Area of a rectangle: A = LW to break this down it's like saying:
Area = length × width
the question already states that the width was 4/5 of a mile and the length was 1/2 of a mile we would convert the miles to feet
1 mile = 5,280 ft
4/5 × 5,280 = 4,224 ft
so, 4/5 of a mile would be 4,224 ft
similarly, 1/2 of a mile would be 2,640
1/2 × 5,280 = 2,640
GREAT we found our new length and width
length= 2,640 ft
width=4,224 ft
plug it in the formula
A= L×W
A= 2,640 ft · 4,224 ft
A= 1,146,880 sq. ft.
change that into square miles by dividing by 27878000
0.041138659 Square Miles