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Study Guide Unit 4B Geometry (Circles and Surface Area) SY24-25

Study Guide Unit 4B Geometry (Circles and Surface Area) SY24-25

Assessment

Flashcard

Mathematics

7th Grade

Practice Problem

Easy

Created by

Wayground Content

Used 1+ times

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

C = πd or C = 2πr, where C is the circumference, d is the diameter, and r is the radius.

2.

FLASHCARD QUESTION

Front

How do you find the diameter of a circle if you know the circumference?

Back

Diameter can be found using the formula d = C/π.

3.

FLASHCARD QUESTION

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter is twice the length of the radius: d = 2r.

4.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

A = πr², where A is the area and r is the radius.

5.

FLASHCARD QUESTION

Front

How do you find the radius of a circle if you know the area?

Back

Radius can be found using the formula r = √(A/π).

6.

FLASHCARD QUESTION

Front

What is the area of a square with a side length of 8 m?

Back

Area = side² = 8 m × 8 m = 64 m².

7.

FLASHCARD QUESTION

Front

If the area of a circle is 50.24 in², what is the radius?

Back

Radius can be found using r = √(A/π) = √(50.24/π) ≈ 4 in.

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