Ms. Brown served her apple pie on a 21 inches radius dish. She wanted to tie a ribbon around the dish to make it a little more festive. How long does the ribbon need to be in order to fit the dish? Use 22/7 as π. (only enter the final answer)

132 inch

Step-by-step explanation:

To find the length around the dish we need to find the perimeter

Perimeter of a circle = circumference = πd

Radius = 21 in

Diameter= 21x2 = 42 in

Therefore perimeter

= 22/7 x diameter

= 22/7 x 42

= 22 x 6

= 132 in

So, she will need a ribbon of length is 132 inches to tie around the dish

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

b

step-by-step explanation: