Question

A circular picture is 8 inches in diameter.

Part A
What is the area of the picture in square inches?

A. 4π square inches
B. 8π square inches
C. 16π square inches
D. 32π square inches
Part B
A frame that is 2 inches wide surrounds the picture. What is the total area of the picture and the frame in square inches?

A. 4π square inches
B. 12π square inches
C. 36π square inches
D. 40π square inches

Answer 1

@Nnesha

Answer 2

@Abhisar

Answer 3

@Nnesha

Answer 4

For Part A

Area of a square = \(\sf \pi \times r^2\)

Where, r = radius = diameter/2

Answer 5

Can u do it now?

Answer 6

umm i still dont get it :(

Answer 7

Which part?

Answer 8

for part A, a?

Answer 9

??

Answer 10

\(\huge \checkmark\)

Answer 11

are you sure?

Answer 12

Yes, are you?

Answer 13

yes

Answer 14

now lets do part b

Answer 15

No wait, no it's wrong.

Answer 16

:(

Answer 17

One silly mistake.

Answer 18

what is it

Answer 19

Diameter is given 8, so radius will be 8/2 = 4. Correct?

Answer 20

yes

Answer 21

Now, putting this value of radius in the formula I just told you we get area = \(\sf \pi \times 4^2\) = ?

Answer 22

whats the symbol in the beginning mean?

Answer 23

It's called as "pi" and its value = 3.14. So if it is written \(\sf 16 \pi\), it actually means 16 \(\sf \times ~\pi\) or if you want to simplify it more it means 3.14 \(\sf \times\) 16

Answer 24

ok

Answer 25

Moving on to the question, the correct answer for part A is?

Answer 26

i got 16

Answer 27

Yes, \(\sf 16 \pi\) square inch to be more precise. Don't forget the "pi" !

Answer 28

ok thank you so much... dont leave because i will be tagging you again!! :)

Answer 29

I m not leaving, so shall we move to part B?

Answer 30

yes

Answer 31

Any idea?

Answer 32

uhh no

Answer 33

@Abhisar

Answer 34

So, any idea about Part B?

Answer 35

whats the equation, ill solve it

Answer 36

This is ur square frame which is 2 inch wide. Area of a square = \(\sf side^2\)

Answer 37

0k @Abhisar

Answer 38

So the answer should be?

Answer 39

b

Answer 40

8

Answer 41

oops..