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mote1985 [20]
3 years ago
15

Find the volume of a sphere with a radius of about 6 cm, what is its surface area?

Mathematics
2 answers:
bulgar [2K]3 years ago
6 0
Pretty sure it’s 452.39cm2
mina [271]3 years ago
5 0

Step-by-step explanation:

sol:

given: r-6cm

we know V of sphere=4/3πr^3

=4/3*3.14*6^3

=904.32 cm^3

TSA of sphere=4πr^2

=4*3.14*6^2

=452.16 cm^2

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3 years ago
The cost for 5 adults and 3 children to attend a show is $210. ( /5)
liraira [26]

Answer: i. Cost of adult ticket = $ 30

ii.  Cost of child ticket = $20

Step-by-step explanation:

Define variables:

Let x= cost of 1 adult tickets , y= cost of 1 child tickets.

Form linear equations:

5x+3y = 210      (i)

2x+5y= 160  (ii)

Multiply (i) by 2 and (ii) by 5

10x +6y = 420       (iii)

10x+25y = 800        (iv)

Eliminate (iii) from (iv)

19y = 380

⇒ y= 20

Put this in (i)

5x+3(20)=210\Rightarrow\ 5x+60 = 210\\\\\Rightarrow\ 5x=150\\\\\Rightarrow\ x=30

Hence, Cost of adult ticket = $ 30 and Cost of child ticket = $20

4 0
3 years ago
A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts
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Answer:

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