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## Homework Statement

The circle inside the large square below has an area of 47.4 cm2.

[URL]http://tinyurl.com/PhysicsSquare[/URL]

Calculate the area of the large square. Note that the circle passes right through a number of grid intersection points.

Heres the help the professor gave

[URL]http://tinyurl.com/PhysicsSquare2[/URL]

## Homework Equations

C^2 = A^2 + B^2

D= sqrt(x^2 + b^2)

D = 2sqrt(A/pi)

## The Attempt at a Solution

4a tall and 1a long

1st attempt.

d = sqrt((1a)^2 + (4a)^2)

d = sqrt(1a + 16a)

d= sqrt(17a)

2nd attempt

d=2sqrt(47.4/pi)

d= 7.77

stuck here I am not sure what else to do

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