9514 1404 393
Answer:
$28.14
Step-by-step explanation:
The area of a container will be the sum of the base area and the lateral area. The relevant formulas are ...
A = πr^2 . . . . . . . . area of the circular base with radius r
A = 2πrh . . . . . . . area of the side of the container
The sum of the two areas is ...
Atot = πr^2 +2πrh = πr(r +2h) = π(7/2 cm)(7/2 cm +2·21 cm) = (π/4)(7)(91) cm^2
Atot = 159.25π cm^2 = 0.015925π m^2 . . . . metal area per container
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Then 125 containers will have an area of ...
Aall = (125)(0.015925π m^2) = 1.990625π m^2 ≈ 6.25373 m^2
The price of this amount of sheet metal will be ...
(6.25373 m^2)($4.50 /m^2) = $28.14 . . . cost of 125 containers
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<em>Additional comment</em>
1 cm = 0.01 m, so (1 cm)^2 = (0.01 m)^2 = 0.0001 m^2
2x+5=4x-9. Set them equal since each is from the midpoint.
14=2x
X=7
So RQ = 2(7)+5+4(7)-9 = 19+19 = 38
Answer:
D. Distributive proprety
Step-by-step explanation:
Because you have to distribute 2 to make it 2x and then do 2 (12) which is 24 and then add 2 to it again which equals 40
It takes Mercury <span>approximately 58 days, 15 h, and 30 min to complete a full rotation..
We are going to write the time not in days, hours and minutes, but only hours.
This means that we have to write 58 days as hours and 30 minutes as hours.
1 day is 24 hours, so 58 days are
58*24=(50+8)*(20+4)=50*20+50*4+8*20+8*4=1,000+200+160+32
=1,200+192=1,392 (hours)
60 minutes are 1 hour, so 30 minutes are 0.5 hours.
Thus
</span>58 days, 15 h, and 30 min are (1,392+15+0.5) hours = 1,407.5 hours
Answer: 1,407.5 hours
