15) A circle has a radius of 10cm. How long is the arc subtended by a central angle of 90°?
A.
2.57
B.
570
C.
10л
D.
20%

answer:     true

step-by-step explanation:

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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