23: A cubic foot holds 7.48 gallons. Find to the nearest gallon the capacity of a rectangular tank 7.56 feet wide, 9.25 feet long, and 6.50 feet high.
2670
2984
3252
3400 gal
24: A grain hopper is a square pyramid 8 feet on each side of the base and 8 feet deep. If a bushel occupies 1.25 cubic feet, how many bushels does the hopper hold?
136.5 bu.
142.3 bu.
141.4 bu.
134.75 bu.
25: A cylindrical fruit can is 4" in diameter and 6 3/4" tall. Find the nearest whole number of fluid ounces it contains. (1 fluid ounce = 1.80 cu. in.)
47
49
45
51
26: A roof is in the form of a square pyramid 12 feet on each edge of the base. The slant height is 20 feet. Find the cost of putting shingles on the roof at 75 cents per square foot of roof surface.
$350.50
$375.75
$360
$398
2007-03-07 02:05:40 · 2 answers · asked by heather n 1 in Science & Mathematics ➔ Mathematics
I don't feel like explaining each one of them...
23)
V = lwh = 454.545
V * 7.48 = 3400 gal
24)
A = 8 * 8 = 64
V = (1/3)Ah = 170.6
170.6 / 1.25 = 136.5 bu
25)
B = pi * 2^2
V = Bh = 84.82
# fl oz = V / 1.8 = 47
26)
P = 12 * 4 = 48
lSA = (1/2)Ps = 480
price = 480 * .75 = $360
2007-03-07 04:07:15 · answer #1 · answered by Bhajun Singh 4 · 0⤊ 0⤋
23.) the volume of a rectanglar tank = L*W*H
this tank had dimensions:
7.56 feet wide, 9.25 feet long, and 6.50 feet high.
so the volume is (7.56)(9.25)(6.5) =454.545 ft^3
we are given that 1cubic foot holds 7.48 gallons, so
(454.545 ft^3)*(7.48 gal/ft^3) =3400 gal
24)the volume of a square pyramid is (area of base)(height)/3.
so calculate the volume and them multiply by 1 bushel/1.25 ft^3.
25 and 26 are solved in a similar manner
2007-03-07 04:11:04 · answer #2 · answered by jaybee 4 · 0⤊ 0⤋