afaaframzi afaaframzi

08-05-2021
Mathematics

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a) A designer has a circular tablecloth with radius 0.5 m. He wants to sew a fringe around the cloth. The fringe is sold by the tenth of a meter.

(i) What length of fringe is needed?

(ii) One meter of fringe costs $4.70. How much will the fringe cost?

b) A semicircular mat has a diameter of 18 m. What is the area of the mat?

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Trancescient Trancescient

08-05-2021

Step-by-step explanation:

a) (i) length = 2(pi)r = 2(3.14)(.5 m) = 3.14 m

(ii)3.14 m × ($4.70/m) = $14.76

b) A = (pi)r^2 = (3.14)(18 m)^2 = 1017.9 m^2

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