The boundary of a park is shaped like a circle. the park has a rectangular playground in the center and 2 square flower beds, one on each side of the playground. the length of the playground is l and its width is w. the length of each side of the flower beds is a. which two equivalent expressions represent the total fencing material required to surround the playground and flower beds? assume that the playground and beds do not overlap.

Step-by-step explanation:

Get the perimeter of the each shape and add it all up to get the total fencing material required.

2 square flower beds = 2 x 4a = 8a

1 rectangular play ground = 2l + 2w 

total fencing material = 8a + 2l + 2w

my answer is$ 12

step-by-step explanation:

because 15 -2=12

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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