MaxWong

Using a calculator, you get

${\pi}^{2}=9.8696044010893586.......$

Trig means trigonometry which involves a few trigonometric functions when you calculate.(sin(x), cos(x), tan(x), cot(x), csc(x), sec(x)).

10(x+2y)

Using the Sine Rule,

$\frac{16}{sin(54)}=\frac{12}{sin C}$

$12sin(54)=16sinC$

$sinC=\frac{3sin54}{4}$

$C = sin{}^{-1}(\frac{3sin54}{4})$which is about 37.35579 degrees

54 + 37.35579...... + A = 180  (angle sum of triangle)

                                 A = 88.6442......

Applying the Sine Rule again,

$\frac{a}{sin A}=\frac{16}{sin54}$

$a = \frac{16sin88.6442......}{sin54}=19.77155$

500 Quintillion

It is impossible because it will make everything doesn't taste like everything XD

(4p^2+2)(3p-1) = 12p^3+6p-4p^2-2 = 12p^3-4p^2+6p-2

6/8 x 5/7 = 3/4 x 5/7 = 15/28