Question

QUICKLY. ALGEBRA 1 HELP ASAP PLEASE I GIVE BRAINLIST AND EXTRA POINTS AND THANKS PLEASE QUICKLY

Answer 1

Answer:

The length and breadth must be 21/ 8 and radius of semicircle must be 21/ 16

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Step-by-step explanation:

Let the length of rectangle be x and breadth be y

The breadth of rectangle is diameter of semi circle

Radius of semicircle = y/ 2

Only 12 ft of material available

It means that the perimeter of the window must be 12ft (at most, not more than that )

Perimeter of the window = perimeter of rectangle + perimeter of semicircle

= (x + x + y) + (pie y/ 2)

= (2x + y) + (11 y/ 7)

=> 12 = 2x + 18y/ 7

[ Since, a regular polygon has all sides equal im assuming the regular rectangle would have all sides equal too]

•°• => 12 = 2y + 18 y/ 7

=> 12 = 32y /7

=> 84 = 32y

=> y = 21/ 8

R = y/ 2

= 21/ 16