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Blizzard [7]
2 years ago
7

HELPP! ASAP PLS!! Find the surface area of the composite solid. Leave your answer in exact terms.

Mathematics
1 answer:
Andreyy892 years ago
3 0

Answer:

Step-by-step explanation:

First find the surface area of the clyinder and find the area circles and subtract

Then find the surface area of a cone, remove the circle area and double it.

Clyinder surface area (without circle area) 2πrh+2πr2=2·π·4·6+2·π·42≈251.32741

251.32741 - 50.2 - 50.2

Cone area: A=πr(r+h2+r2)=π·4·(4+32+42)≈113.09734

113.09734 - 50.2 - 50.2

Total: 12.69734 + 150.92741 = 163.62475

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Three numbers are in the ratio 2 : 3 : 4. The sum of their cubes is 33957. Find the largest number
lina2011 [118]
We take each number as x = 2x 3x 4x 
(2x)³+(3x)³+(4x)³=33957
8x³+27x³+64x³=33957
99x³=33957
x³=33957÷99
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x=7
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4 0
3 years ago
I have some questions that need to be answered fast.<br><br> 1. 42/j = 35/55
Novay_Z [31]

\frac{42}{j}  =  \frac{35}{55}

to solve for j first you need to cross multiply;

j × 35 = 42 × 55

35j = 2,310

j = 2,310 ÷ 35 (did the inverse operation)

j = 66

Hope that helps :D

6 0
3 years ago
By selling old CD Sarah has a store credit of $153 a new CD cost $18 what are the problem numbers of new cCD Sarah can buy
DiKsa [7]
Rileyflipflop, \frac{153}{18} = 8 \frac{1}{2}, since she can't buy half a CD, she's limited to no more than 8 CDs. If x = the cost of one CD, then x CDs cost $18x. Since we are limited to $153, our equation looks like... 18x < 153x < 8 \frac{1}{2} Again, since we can't buy half a CD, your answer should actually be... x ≤ 8 since we can buy 8 CDs or fewer.
4 0
3 years ago
Jenny and Hanan are collecting clothes for a clothing drive. Hanan collected 1/2 as many bags of clothes as Jenny did. If Jenny
Montano1993 [528]

Answer:

Hanan collect \frac{3}{8} of a bag of clothes

Step-by-step explanation:

Let

x ------> amount of clothing bag that Jenny collected

y ------> amount of clothing bag that Hanan collected

we know that

y=\frac{1}{2}x -----> equation A

x=\frac{3}{4} -----> equation B

Substitute equation B in equation A

y=\frac{1}{2}(\frac{3}{4})

y=\frac{3}{8}

therefore

Hanan collect \frac{3}{8} of a bag of clothes

5 0
3 years ago
in 2002, a 30 second commercial during super bowl cost an average of 1,900,000. At this rate, how much would a 45 second commerc
kotegsom [21]
This is a unit multiplier of sorts

1,900,000 x 45/30

Simplify

1,900,000 x 3/2 

2,850,000
3 0
3 years ago
Read 2 more answers
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