DragonWarrior203
02.04.2020 •
Mathematics
Most tornadoes last less than an hour and travel less than 20 miles. The wind speed w (in miles per hour) near the center of a tornado is related to the distance d (in miles) the tornado travels. The following model shows this relationship: w = 93 log d + 65 a. If a tornado has traveled 13.6 miles, what is its wind speed? (Round to the nearest whole number and don't forget your units.
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Ответ:
base = 3 ft
surface area = 51 ft²
height = ?
surface area of a square pyramid = B + 1/2 nbl
n = number of triangle
b = base measure
l = slant height
51 ft² = (3ft)² + 1/2 * 4 * 3ft * l
51 ft² = 9ft² + (4*3ft / 2) l
51 ft² - 9 ft² = 12ft/2 * l
42 ft² = 6 ft * l
42 ft² / 6 ft = l
7 ft = l
height of the pyramid is 7 feet.