Can any one please help me to do e and d please can anyone do it for me please

d = 520 cm^3   e = 1717.66 cm^2

Step-by-step explanation:

d) The area of the face triangle is 40 and multiply that with the length, 13 to get 520.

e) The volume of the half circle is 190.85 and the volume of the cone is 1526.81 and add them

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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step-by-step explanation:

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