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3 years ago

Calcite the area of sphere radius 3 give your answer in 1 decimal place

Mathematics

2 answers:

alexgriva [62]3 years ago

5 0

Answer:

113.1 units²

Step-by-step explanation:

Surface area of sphere = 4×pi×r²

= 4 × pi × 3²

= 36pi units²

= 113.0973355 units²

= 113.1 units²

Lisa [10]3 years ago

3 0

Answer: I assume you mean surface area of a sphere.

The formula is 4πr²

If radius=3, then:

4 times $\frac{22}{7}$ times 3²

4 times $\frac{22}{7}$ times 9

= 113.142857

Rounded to 1 decimal place = 113.1

NOTE: In place of π you can also use 3.14.

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2 years ago

SHOW YOUR WORK!! What is the distance between point A (-3, -2) and Point B (4, -7)?

gulaghasi [49]

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3 years ago

Larry has a gift card worth 400 for a local entertainment store Movies cost $20 each and newly released video games cost $50 eac

Vikki [24]

Answer:

All are correct.

Step-by-step explanation:

Let x be the number of movies and y be the number of newly released video games.

Larry has a gift card worth 400 for a local entertainment store Movies cost $20 each and newly released video games cost $50 each.

$20x+50y\leq 400$

Larry must purchase at least nine items.

$x+y\geq 9$

Check both inequalities of all given ordered pairs.

For (5,6),

$20(5)+50(6)\leq 400\Rightarrow 400\leq 400$

$5+6\geq 9\Rightarrow 16\geq 9$

Point (5,6) satisfy both inequalities.

For (10,4),

$20(10)+50(4)\leq 400\Rightarrow 400\leq 400$

$10+4\geq 9\Rightarrow 14\geq 9$

Point (10,4) satisfy both inequalities.

For (20,0),

$20(20)+50(0)\leq 400\Rightarrow 400\leq 400$

$20+0\geq 9\Rightarrow 20\geq 9$

Point (20,0) satisfy both inequalities.

For (15,2),

$20(15)+50(2)\leq 400\Rightarrow 400\leq 400$

$15+2\geq 9\Rightarrow 17\geq 9$

Point (15,2) satisfy both inequalities.

Therefore, all combination of movies and newly released video games Larry could purchase using his gift card.

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3 years ago

Calcite the area of sphere radius 3 give your answer in 1 decimal place ​

Calcite the area of sphere radius 3 give your answer in 1 decimal place