2 years ago

A sphere has a surface area of πcm^2

Mathematics

1 answer:

dimaraw [331]2 years ago

5 0

Answer:

hope this helps you..........

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Dividing 3 digits by 2 digits lesson 3.6

eimsori [14]

355÷5=

__71________
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35 l
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3 years ago

Find the area to this

Vinvika [58]

Answer:

Step-by-step explanation:

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2 years ago

Simplify the surd 3√ 20 +√ 45

melisa1 [442]

Answer:

9 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplify the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$

= 2 $\sqrt{5}$

$\sqrt{45}$

= $\sqrt{9(5)}$

= $\sqrt{9}$ × $\sqrt{5}$

= 3 $\sqrt{5}$

Then

3 $\sqrt{20}$ + $\sqrt{45}$

= 3(2 $\sqrt{5}$ ) + 3 $\sqrt{5}$

= 6 $\sqrt{5}$ + 3 $\sqrt{5}$

= 9 $\sqrt{5}$

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2 years ago

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Write a formula for S in terms of r.

bulgar [2K]

Answer:

Step-by-step explanation:

S=θ/360*2πr

S=0.020943951r

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2 years ago

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Two trains leave the station at the same time one heading east and one heading west the eastbound train travels 80 miles per hou

k0ka [10]

100*2.2=220
80*2=176
220+176=396

So the two trains will take 2.2 hours so that they are 396 miles apart.

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3 years ago