A = 3x(x + 4) B = 3x + (x + 4) A A C = + 4) D = [3x (x + 4)] A x(x A – A = 12 7 8 4 B = 12 7 7 5 V V • • • • • • C = 12 6 5 8 D = 11 5 7 8 V V • • • • • • 6.8C Justify your answers. – 1. 3. 2. 4. TEKS 6.8(D) - Determine solutions for problems involving the area of rectangles, parallelograms, trapezoids, and triangles and volume of right rectangular prisms where dimensions are positive rational numbers. 1 The dimensions of a grassy section at a park are 3 The volume of the rectangular prism is 90 shown. What is the area of the grassy section, in cubic feet. What is the height of the square meters? rectangular prism? 2 The table shows the length and width of different F 6 ft G 7 ft rectangles. Which two rectangles have the same area? H 7.5 ft J 8 ft 4 A mosaic tile is below. Dan wants to cover a 600-square-inch area. How many mosaic tiles does Dan need? F Rectangles 1 and 2 A 25 G Rectangles 1 and 4 B 30
A V = 12 • 7 • 8 • 4 B V = 12 • 7 • 7 • 5 C V = 12 • 6 • 5 • 8 D V = 11 • 5 • 7 • 8 A A = 3x(x + 4) B A = 3x + (x + 4) C A = x(x + 4) D A = [3x – (x + 4)] 6.8C – Justify your answers. 1. 3. 2. 4. TEKS 6.8(D) - Determine solutions for problems involving the area of rectangles, parallelograms, trapezoids, and triangles and volume of right rectangular prisms where dimensions are positive rational numbers. 1 The dimensions of a grassy section at a park are shown. What is the area of the grassy section, in square meters? 2 The table shows the length and width of different rectangles. Which two rectangles have the same area? F Rectangles 1 and 2 G Rectangles 1 and 4 3 The volume of the rectangular prism is 90 cubic feet. What is the height of the rectangular prism? F 6 ft G 7 ft H 7.5 ft J 8 ft 4 A mosaic tile is below. Dan wants to cover a 600-square-inch area. How many mosaic tiles does Dan need? A 25 B 30
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