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Work out the perimeter of a quarter circle that has the diameter of 7cm

Sagot :

Answer:

Perimeter = 12.5 cm

Step-by-step explanation:

Perimeter of quarter cirlce:

    d = 7 cm

    [tex]\sf \boxed{\text{Circumference of quarter circle =$\dfrac{1}{4} \pi d$}}[/tex]

                                                       [tex]\sf = \dfrac{1}{4}*\dfrac{22}{7}*7\\\\ =\dfrac{11}{2}\\\\ = 5.5 \ cm[/tex]

   Perimeter = radius + radius + circumference of quarter circle

                     = diameter + circumference of the quarter circle.

                      = 7  + 5.5

                      = 12.5 cm

Answer:

24.997

Step-by-step explanation:

its actually really hard for me to explain im sorry i only know the answer-