Answer:
36.3 percent
Step-by-step explanation:
Answer:
I am currently doing that one as well right know and I think that you need two octahedrons, and 8 tetrahedrons
Step-by-step explanation:
Answer:
Step-by-step explanation:
tanA = sinA/cosA = (4/7)/(3/7) = 4/3
The <em><u>correct answer</u></em> is:
624 crayons.
Explanation:
In 12 of the boxes, 28 crayons have not been used; this leaves 64-28=36 crayons that have been used. 12(36) = 432 crayons have been used in these boxes.
3 full boxes have been used; this is 3(64) = 192 crayons.
Together this makes 432+192 = 624 crayons that have been used.
You'll need to calculate the surface area to be painted. The room has two ends, 2 sides and 1 ceiling. The area of the ceiling is 18*20. The area of the two ends of the room is 2(8*18). The area of the two long walls is 2(8*20)
Add these areas together: 18*20 + 2*8*18 + 2*8*20, or 968.
That's 968 square feet. Since each can contains enough paint for 400 square feet of coverage, divide 968 by 400:
968
----- = 2.42. This means having to purchase 2.5 (gallons)
400 This answer is accurate to the nearest 0.5.
