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Biblioteka

Open Up - Grade 7 - Mathematics - Unit 3 - Lesson 9

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Pitanje 1
1.

A circle with a 12 inch diameter is folded in half and then folded in half again.

What is the area of the resulting shape?

Pitanje 2
2.

Pitanje 3
3.

The face of a clock has a circumference of 63 in.

What is the area of the face of the clock?(round to the nearest whole number)

Pitanje 4
4.

Which of these pairs of quantities are proportional to each other?

Radius and diameter of a circle

Pitanje 5
5.

Which of these pairs of quantities are proportional to each other?

Radius and circumference of a circle

Pitanje 6
6.

Which of these pairs of quantities are proportional to each other?

Radius and area of a circle

Pitanje 7
7.

Which of these pairs of quantities are proportional to each other?

Diameter and circumference of a circle

Pitanje 8
8.

Which of these pairs of quantities are proportional to each other?

Diameter and area of a circle

Pitanje 9
9.

Find the area of this shape.

Pitanje 10
10.

Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages that Elena can read, Jada can read 5.

Complete the table.

Pitanje 11
11.

Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages that Elena can read, Jada can read 5.

Here is an equation for the table: j = 1.25e. What does the 1.25 mean?

Pitanje 12
12.

Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages that Elena can read, Jada can read 5.

Write an equation for this relationship that starts e = ...