Answer:
a.) First check on the height of the bar that ranges between 20 and 24 which is 6. The 6 is the number of students who bought 20 books or more, so get the percentage of those students who bought 20 or more books; divide 6 which is the number of students who bought 20 books or more with the total number of students which is 40 then multiply with 100.
% of students who bought 20 or more books = 6/40 ×100
=15
Step-by-step explanation:
b.) Find the area of a trapezium
= 1/2 × {a+b} × h
= 1/2 × {9 + 13} ×12
= 132
= 1/2 × {13 + 6} × 12
= 108
Mean no. of books bought = 132 + 108
= 240
Answer:
35
Step-by-step explanation:
70 ÷ 2 = 35
Based on the lateral area of the cylinder, the volume of the cylinder can be calculated to be 139.5 cm³.
<h3>What is the volume of the cylinder?</h3>
When given the lateral surface area of a cylinder, you can find the volume as:
= Area of lateral surface x (radius / 2)
Solving gives:
= 55.8 x (5 / 2)
= 55.8 x 2.5
= 139.5 cm³.
Missing part of the question:
Radius of the cylinder is 5cm.
Find out more on the lateral surface area at brainly.com/question/14642720.
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Answer:
5
Step-by-step explanation:
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