Well you can just start off by doing 48/12 which is 4. So he got 1/4 off the box of chocolates, and 1/4 in percentile form is 25%.
He got a discount of 25%
We want to write
![\frac{\sqrt[]{5}+1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%5B%5D%7B5%7D%2B1%7D%7B2%7D)
as decimal, doing it on a calculator we have
![\frac{\sqrt[]{5}+1}{2}=1.61803398875](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%5B%5D%7B5%7D%2B1%7D%7B2%7D%3D1.61803398875)
But we only need three decimal places, then the result is
![\frac{\sqrt[]{5}+1}{2}=1.618](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%5B%5D%7B5%7D%2B1%7D%7B2%7D%3D1.618)
Let ABC be the triangle (with A as summit) and BC its base which is at the same time the diameter of the semi-circle. Let AH be the altitude of ABC.
Length of the Base BC (which is also the diameter of the semi circle) = 4 units and consequently the radius = 2 units
Length of the altitude AH = 5 units, hence:
a) the Area of ABC = (Base x Altitude)/2 = (4 x 5)/2 = 10 units²
b) the area of the semi circle is: (π x R²)/2 = (π x 2²)/2 = 6.28 units²
Total area = 16.28 units²
$335.8
Take 251.85/75 and you get 3.358, multiply by 100 and you get your answer
Answer:13 over 20
13
20
=0.65
Step-by-step explanation:
