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3 years ago

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Question 2 of 10

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Art [367]3 years ago

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I’m not sure but I think it’s D maybe I looked it up

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A circle with a circumference of 51 inches to find the area

Kaylis [27]

$\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98$

4 0

3 years ago

A families weekly shopping bill increases from £120 to £150, what is the percentage increase?

AVprozaik [17]

Answer:

The answer is 25%

Step-by-step explanation:

150-120=30

30 divided by 120=0.25

0.25 times 100 (because percents are of 100)= 25%

formula: ([b-a)/a]x100

3 0

3 years ago

abby has saved 67% of the money she needs to buy a new camera that cost $156.00 how much more money does she need to buy a new c

worty [1.4K]

Answer:

$51.48

Step-by-step explanation:

Percent left: 100%-67%=33%

33% can also be expressed as the fraction 33/100

Then, 33% of 156 is 156*33/100=51.48

5 0

3 years ago

24 litres of lemonade was poured into a rectangular glass tank with a base area of 1200 cm2. Joyce found that the glass tank was

Gnom [1K]

Answer:

once you find 3/4 of 1200 you will know the answer

Step-by-step explanation:

3/4 of 1200

4 0

3 years ago

Read 2 more answers

Please help i am confused on this too!

lions [1.4K]

Answer:

the first, third, and the forth

3 0

3 years ago

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