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Darya [45]
3 years ago
13

Help ASAP!! Answer must be in radicals and in terms of pi.

Mathematics
2 answers:
Sladkaya [172]3 years ago
6 0

Answer:

158. surface area = 108π

volume = 216√3π

159. surface area = 4√97π+16π

volume = 144π

Juliette [100K]3 years ago
4 0
Sorry bud u gotta at least put some pep in ur step.
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PLEASE SOMEONE TELL ME HOW THEY GOT 423 cm AS THE ANSWER FOR A. I NEED HELP WITH THIS QUESTION!!!!!!!!!!!!!
3241004551 [841]

From the setup of the problem, the "length of the top of the bookcase, measured along the attic ceiling" will be the hypotenuse of a right triangle, the length "AB". We have both the angle between AB and AC and the length of AC (3.24 meters), so we can use trigonometric identities.

The cosine of the 40 degree angle between AB and AC is equivalent to the length of AC divided by the length of AB. Equivalently, we have:

cos(40) = \frac{3.24}{h}

where "h", the hypotenuse, is the length we want. Rearranging the formula to solve for h we have that

$h = \frac{3.24}{cos(40)}$

which is 4.2295... meters. Converting to centimeters (multiplying by 100) we have that h = 422.95... centimeters, or if we round the value, h = 423 centimeters.

6 0
3 years ago
If a number is right next to a variable,
valina [46]
I think multiplication but I’m not sure sorry
3 0
2 years ago
Read 2 more answers
Hep me on this please
Alona [7]

Answer:

The answer is 2240m².

Step-by-step explanation:

Given that the formula of area of trapezium is A = 1/2×(a+b)×h where a and b represents the length and h is height :

area =  \frac{1}{2}  \times (a + b) \times h

let \: a = 50 \\ let \: b = 90 \\ let \: h = 32

area =  \frac{1}{2}  \times (50 + 90) \times 32

area =  \frac{1}{2}  \times 140 \times 32

area = 70 \times 32

area = 2240 \:  {m}^{2}

5 0
3 years ago
Read 2 more answers
Can someone help me solve this?​
atroni [7]

Answer:

5

Step-by-step explanation:

speed=d÷t.

s=1/4=1/20

cross multiply your equation

6 0
2 years ago
Esto es verdadero oh falso <br> como se resuelve<br> 3/4 + 1/2 + 1/3 + 2/9 + ...... = 9/4
Step2247 [10]

Answer

The missing value is 4/9

8 0
3 years ago
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