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2 years ago

9

The area of a circle is 18.31cm2. find the length of the radius rounded to 2 dp.

1 answer:

drek231 [11]2 years ago

5 0

Answer:

Step-by-step explanation:

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Decimal place in a quotient

Yakvenalex [24]

What do you mean this question dosent make any sence

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3 years ago

Chad is eating a 50-gram chocolate bar which contains 30% cocoa. How many grams of cocoa are in the chocolate bar?

Allushta [10]

Answer: 15 grams

If he had 100 grams of candy bar, then 30% of that is 30 grams (since 30/100 = 30%). Cut this in half and we end up with 30/2 = 15.

Another way to find the answer is to multiply 50 and 0.30 which is the decimal form of 30%. So we have 50*0.30 = 15 which is the same answer.

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3 years ago

10 is 40% percent of what

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<span>10 is 40% percent of what </span><span>400 </span>maybe

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4 years ago

Read 2 more answers

If n lines are drawn in a plane, how many regions do they separate the plane into? induction

grandymaker [24]

Hello,

Let's assume i the number of lines,
u(i) the number of regions:

$u_0=1\\\\
u_1=2=1+1=1+u_0\\\\
u_2=4=2+u_1\\\\
u_3=7=3+u_2\\\\
u_4=11=4+u_3\\\\
u_5=16=5+u_4\\\\
...\\\\
\boxed{u_{n+1}=(n+1)+u_{n}}\\\\

u_{n+1}=(n+1)+n+(n-1)+...+1+u_0\\\\

\boxed{u_{n+1}= \dfrac{(n+1)*(n+2)}{2}+1 }$

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3 years ago

Please help :(( ive been stuck for a while and im super late

Degger [83]

Answer:

-5^11

Step-by-step explanation:

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3 years ago