Question

15 POINTS- ITS DUE TONIGHT

Answer 1

Ok this isn’t my answer i found it on quora but it answers ur question u have

We can write a system to solve this problem

Let x= the radius of Circle A

Let y=the diameter of Circle B

x=2y-3

2x+y=49

since we are trying to find the area and the circumference of circle A, we only have to find what x is

x=2y-3 → y=1/2x+3/2

next, we plug in 1/2x+3/2 for y:

2x+1/2x+3/2=49

we can then multiply all the numbers by 2 to get rid of the fractions:

4x+x+3=98

5x+3=98

5x=95

x=19

Circle A radius=19ft

Finally, we solve for the area and circumference:

Area:

A=pi*r^2

A=3.14*19^2

A=1133.54 feet^2

Circumference:

C=2*pi*r

C=2*3.14*19

C=119.32 feet

Answer 2

Step-by-step explanation:

$r=2x-3\\\\d=4x-6\\\\dA+dB=49\\\\\4x-6+x=49\\\\5x=49+6\\\\ \frac{5x}{5} =\frac{55}{5} \\\\x=11$

radius of OA

⇒$2 (11) -3$

⇒$22-3$

⇒19

C=2$\pi$r

= 2$\pi$(19)

C=38$\pi$ ft

Area=$\pi$²

⇒$\pi (19)^{2}$

Area=36=361 ft²

hope this helps