Question

9. Bina wants to decorate a circular cake of diameter 15 cm with cream on its edge. Find the cost
of decorating the circular cake if it costs 20 per cm. (Take 3.14)​

Answer 1

Answer:

pls answer my questions too

Step-by-step explanation:

they are talking about edge so I think here we need to calculate circumference.

diameter=15cm

then, radius = 15/2 = 7.5 cm

now,

circumference of circle= 2*pie*r

                                      =2*3.14*7.5= 47.1 cm

Thus, cost of decorating 1cm edge of cake= Rs 20

         cost of decorating 47.1 cm edge of cake = 47.1*20= 942 Rs