Fractional Lengths in Triangles and Prisms

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Find Area of a Triangle with Fractional Lengths & Missing Side Lengths.

(A). Find the area of Triangle A in square centimeters. Show your reasoning.

(B). The area of Triangle B is 8 square units. Find the length of b. Show your reasoning.

(C). The area of Triangle C is 54/5 square units. What is the length of h? Show your reasoning.

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Finding Missing Sides Lengths of Similar Triangles with Decimal Lengths.

  • Use cubes or the applet to help you answer the following questions.​

(1). How many cubes with edge lengths of  inch are needed to fill the cube below?

(2). What is the volume in cubic inches, of a cube with edge lengths of   inch? Explain or show your reasoning.

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Find Volume of a Prism by Counting Cubes.

. Use cubes or the applet to help you answer the following questions.​

(1). Four cubes are piled in a single stack to make a prism. Each cube has an edge length of ½ inch. Sketch the prism, and find its volume in cubic inches.

(2). For each prism, record in the table how many -inch cubes can be packed into the prism.

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(1). The area of Triangle B is 8 square units. Find the length of b. Show your reasoning.

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Which expression can be used to find how many cubes with edge length of 13 unit fit in a prism that is 5 units by 5 units by 8 units?