whats a without using a calculator

Are 3.14 and 3.142 both supposed to be pi?

Simplify both I and w

$I=(8^2*3.14)+(8^2*3.142)$ I assume 3.14 is "pi" so

$I=(8^2*\varpi )+(8^2*\varpi )$ Factor

$I=(8^2*\varpi )(1+1)=2(8^2*\varpi )$

Now w

$w=(\varpi *16*14)$

$a=l+w$

$a=2(8^2*\varpi )+(\varpi *16*14)$

$a=2*8^2*\varpi +\varpi *16*14$

$a=2*8*8*\varpi +\varpi *2*8*2*7$

Factor, 2,8, $\varpi$

$16\varpi (8+2*7)$

$16\varpi (22)$

$22*16*\varpi$

$2(11*16*\varpi )$

$11*32*\varpi$

$352\varpi$ = $1091$ (Exactly, 1105.841...) However, a good approximate without a calculator is assuming $\varpi =3.10$