A7-foot wide sidewalk is to be built around a reflecting pool. The radius of the pool is 21 feet. Find the area of the sidewalk. (Use 3.14 for pi.)

A. 2464 sq. ft
B. 154 sq. ft
C. 1232 sq. ft
D. 1077 sq. ft

d. vertex

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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the answer should be a. snail