Solve -663div4pi*1/36pi*10^-9

$$-663 \div 4 \pi \times \frac{ 1 }{ 36 } \pi \times { 10 }^{ -9 }$$

Evaluate

$$-\frac{221\pi ^{2}}{48000000000}\approx -0.000000045$$

Solution Steps

Multiply \pi and \pi to get \pi ^{2}.

$$\frac{-663}{4}\pi ^{2}\times \frac{1}{36}\times 10^{-9}$$

Fraction \frac{-663}{4} can be rewritten as -\frac{663}{4} by extracting the negative sign.

$$-\frac{663}{4}\pi ^{2}\times \frac{1}{36}\times 10^{-9}$$

Multiply -\frac{663}{4} and \frac{1}{36} to get -\frac{221}{48}.

$$-\frac{221}{48}\pi ^{2}\times 10^{-9}$$

Calculate 10 to the power of -9 and get \frac{1}{1000000000}.

$$-\frac{221}{48}\pi ^{2}\times \frac{1}{1000000000}$$

Multiply -\frac{221}{48} and \frac{1}{1000000000} to get -\frac{221}{48000000000}.

$$-\frac{221}{48000000000}\pi ^{2}$$