A.
PEMDAS
Parenthesis always comes first, then exponents, multiplication and division, adding and subtracting
Since we know that ratio of AB : AC is 1 : √2, then we can more or less use those values for the sides, check the picture below.
so we're really looking for tan(2A). Let's bear in mind that tan²(θ) is just another way to write [ tan(θ) ]².
Answer:
7.6pie
Step-by-step explanation:
120°/360°=X/11.4×2 pie
1/3×22.8 pie =X
X= 7.6 pie
The formula is 2(wl+hl+hw) to calculate surface area fo a rectangular prism.