Find the perimeter and area of a semicircular protractor whose radius is 5.5cm. (take pi as 3.14)
find solution.

The area is A=pi*r²/2

A=3.14*5.5²/2

A= 3.14*30.25/2

A=94.985/2

A= 47.49

Perimeter = 2πr/2 + 2r

= πr + 2r

= r(π+2)

= 5.5(3.14 + 2)

= 5.5 x 5.14

= 28.27 cm

Area = πr^2/2

= 3.14 x 5.5 x 5.5/2

= 47.4925 cm^2

Hope this helps!

answer: idk

step-by-step explanation: sry idk

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.