A yardstick or a yard (3 feet x 12 inches) has 36 inches in it.
There are 36 inches in a yardstick, as a yardstick measures one yard, which is equivalent to 36 inches.
There are 3 feet in a yardstick
A yard stick is three feet long.
3 feet is 36 inches and so the ratio is 6 to 1
So, I can't give you the answer with the appropriate formulas or w/e but this is how I figure it out in my headFind the ratio between the yard stick and it's shadow36/21 = 1.71This means that object creating the shadow is 171% taller that its shadow is longFind the amount of inches in 168 feet (this is to be more accurate with your answer)168 * 12 = 2016 inchesMultiply the previous number by the ratio found before2016 * 1.71 = 3447.4 inches (or 287.3 feet)If a 36 inch yardstick casts a 21 inch shadow, a building whose shadow is 168 feet is 287.3 feet talls'howyagottadoitboyyiieAnother answer:Using trigonometry will give you a more accurate answerTangent ratio = opposite (the yardstick) divided by the adjacent (yardstick's shadow)Tangent ratio = 36/21 = 12/7 in its lowest termsNow rearrange the formula to find the height of the buildingTangent ratio*adjacent (the building's shadow) = opposite (the building)12/7*168 = 288The height of the building is 288 feet.
ratio = 1.62 5 feet / 37 inches = (5 x 12) inches / 37 inches = 1.62
a yardstick
There are twelve inches in a foot and there are three feet in a yard. So there are thirty-six inches in a yard. The ratio of yards to feet to inches is 1 : 3 : 36 The ratio of 'inches in a foot' to 'inches in a yard' is the same as the ration of feet to yards - 1 : 3
The ratio is 2:1 !
5 feet is 60 inches and so the ratio is 3 to 20 in its simplest form
3 feet equals 36 inches so the ratio is 2:36 and you can simplify it to get 1:18.