Investigate the concept of circles. a. Demonstrate an understanding of the proportional relationships between diameter, radius, and circumference of a circle. b. Understand that the constant of proportionality between the circumference and diameter is equivalent to . c. Explore the relationship between circumference and area using a visual model. d. Use the formulas for circumference and area of circles appropriately to solve real-world and mathematical problems.
Apply the concepts of two- and three-dimensional figures to real-world and mathematical situations. a. Understand that the concept of area is applied to two-dimensional figures such as triangles, quadrilaterals, and polygons. b. Understand that the concepts of volume and surface area are applied to three-dimensional figures such as cubes, right rectangular prisms, and right triangular prisms. c. Decompose cubes, right rectangular prisms, and right triangular prisms into rectangles and triangles to derive the formulas for volume and surface area. d. Use the formulas for area, volume, and surface area appropriately.
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Q 1/4
Score 0
A circle has a radius of 2 cm. What is area in square units? ( pi= 3.14)
30
6.28
12.55
5.14
10.26
Q 2/4
Score 0
A circle has a radius of 6 inches. How many square feet is the area of half of the circle in square units to the nearest whole number?
30
50
19
38
113
4 questions
Q.
A circle has a radius of 2 cm. What is area in square units? ( pi= 3.14)
1
30 sec
7.GM.4
Q.
A circle has a radius of 6 inches. How many square feet is the area of half of the circle in square units to the nearest whole number?
2
30 sec
Q.
Samantha has a rectangular shaped fish tank in her room. The tank has a height of 2.6 ft, a width of 2.1 ft, and a length of 3.9 ft. What is the BEST approximation of the amount of water her fish tank can hold?
3
30 sec
Q.
If you know the diameter of a circle, how do you find its circumference?
