hyperkid hyperkid

22-02-2015
Mathematics

Answered

calculate the area of a circle with the radius of 2cm (1dp)

Answer :

crisforp crisforp

22-02-2015

The are of a circle is π * r^2 = 4π ≈ 12.56 ;

Answer Link

22-02-2015

area= pi x r^2

r^2= 2x2=4

area= pi x 4

area=12.5663706144

=12.6 (1 decimal place)

Answer Link

Other Questions

The final disaster in a tragedy in which the hero is destroyed is called theA. climaxB. falling actionC. catastrophe

Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of [tex]$\$[/tex]29[tex]$. For any minutes over 250, Tracy is charged $[/t

Describe the role of filters in adaptive optics for laser communications.

13. Select one example of a high-tech system/device:(Select One)A. Tangible symbol communication strip and ringB. Picture communication deviceC. Prox TalkerD. i

Solve for [tex]\( x \)[/tex]:[tex]\[ \left(\sqrt{\frac{3}{5}}\right)^{x-1} = \left(\frac{27}{125}\right)^{-1} \][/tex]

Which of the following statements is not correct regarding the characteristics of chronic glaucoma?a. Degeneration and obstruction of the trabecular network b.

In two paragraphs, no less than six cogent sentences each, Discuss two EEO or HR Concepts you've learned in this class that you did not know prior to taking it

What is one key difference between "The Quinceañera" and "The Smithville Gazette: Neighborhood Thief Strikes Again"?A. The bus stop settingB. The main character

C'est évident Describe these people using expressions with avoir.

Why is a bond with a higher interest rate often considered a higher risk investment?A. More secure bonds have higher interest rates.B. A higher interest rate me

What was Abraham Lincoln’s concern about the Supreme Court’s Dred Scott decision?

what is the slope of the line that passes through (8,4) and (6,7)?

The average distance from Pluto to the sun is about 6 x 10^9 kilometers. The average distance from mars to the sun is 2 x 10^8 kilometers. The average distance

Maria is reading a humorous story in which many of the ideas are downplayed or treated casually. Which literary device is the author using in the story? A. alle

Why should you use a control during an experiment? A. to help maintain order B. to provide a greater certainty that the observed results are not by chance C. to

in a survey if 27.5 percent of those questioned chose swimming as their favorite. If 11 people chose swimming then how many people were surveyed

⇒please help How many solutions does the equation 2(2x-10)-8= -2(14-3x) have? a.one solution b. two solutions c. no solutions d. infinitely many solutio

The most complex level of organizational hierarchy that climate change could potentially affect is Earth’s

Why did the sugar act angered the colonists ?

Which changes of state result in a decrease in the kinetic energy of the particles?