Question

The lid for a circular plastic food container has a diameter of 9 cm.



What is the approximate area of the top of the lid? Use 3.14 to approximate pi and round your answer to the nearest hundredth.

2 x pi x 9?

Answer 1

the requested area is given by the subsequent formula:
\[A = \pi \times \frac{{{9^2}}}{4} = 3.14 \times \frac{{81}}{4} = ...c{m^2}\]

Answer 2

62.775 = 1,017.36

Answer 3

no, it is:
\[ = \pi \times \frac{{{9^2}}}{4} = 3.14 \times \frac{{81}}{4} = 63.585\;c{m^2}\]

Answer 4

63.585= 63.585 yeppers

Answer 5

now you have to round off to the nearest hundredth, what do you get?

Answer 6

64.

Answer 7

am i right?

Answer 8

I think not, for example if I have to round off this number to the nearest hundredth
1.156
then I get:
1.16

Answer 9

so, what do you get?

Answer 10

oh 63.60

Answer 11

better is 63.59

Answer 12

:D

Answer 13

:)

Answer 14

Thankies!

Answer 15

:)