Area: Unit Test Review

Sal is trying to determine how much fabric he will need to create the kite diagrammed below. Which expressions can he use to find the total area of the kite? Check all that apply. (40)(108) (73)(115) (40)(33)+(40)(75) (40)(170) (80)(108)

(40)(108) (40)(33)+(40)(75)

What is the length of side XY as shown on the coordinate plane? 0 units 1 units 3 units 4 units

4 units

The expression below can be used to find the area of a triangle with a base of 4.5 in. and a height of 2.1 in. 1/2(n)2.1 What number should go in place of n to find the area of the triangle?

4.5

Suzi is designing a path with parallelogram-shaped pavers as shown in the diagram. The area of the path is 120 square feet. About how many pavers will she need to cover the path? 40 60 120 160

120

What is the area of the irregular figure below? 290cm2 360cm2 3960cm2 7920cm2

290cm2

A trapezoid was broken into two congruent triangles and a rectangle. What is the base length, b, of one of the triangles? 3 cm 4 cm 6 cm 7 cm

3 cm

Which equations can be used to determine the area of the irregular figure? Check all that apply. A= 3(5)+1/2(5)(6) A= 1/2(5)(9)+1/2(3)(5) A= 1/2(3)(5)(9) A= 3(5)(9) A=1/21/2(5)(9)+3(5) A=3(5)+6(5)

A= 3(5)+1/2(5)(6) A= 1/2(5)(9)+1/2(3)(5)

What are the possible dimensions of a rectangle with an area of 40 square units? Check all that apply. Base: 8 units Height: 5 units Base: 8 units Height: 6 units Base: 4 units Height: 10 units Base: 4 units Height: 8 units Base: 20 units Height: 2 units Base: 2 units Height: 40 units

Base: 8 units Height: 5 units Base: 4 units Height: 10 units Base: 20 units Height: 2 units

How can you break up the figure into familiar shapes to determine the area? Subtract the area of the 5 yd by 3 2/3yd rectangle from the area of the 6 yd by 7 1/4 yd rectangle. Add the area of the 5 yd by 3 2/3 yd rectangle to the area of the 6 yd by 7 1/4 yd rectangle. Subtract the area of the 6 yd by 7 1/4 yd rectangle from the area of the 5 yd by 3 2/3 yd rectangle. Multiply 6 yd by 7 1/4 yd and subtract 5 and 3 2/3 from the product.

Subtract the area of the 5 yd by 3 2/3yd rectangle from the area of the 6 yd by 7 1/4 yd rectangle.

Jillian plans a pillow pattern before sewing. The parallelogram in the center of the pattern has a base length of 9 inches and a height of 7 inches. She needs to find the area of the fabric surrounding the parallelogram pattern. Which statements below should she apply when solving this problem? Check all that apply. The parallelogram has a base length of 16 inches and a height of 8 inches. The area of the parallelogram is (9)(7)=63 The total area of the block is 128 square inches. The area surrounding the parallelograms can be found by adding 63 to 128. The area surrounding the parallelogram can be found by subtracting 63 from 128.

The area of the parallelogram is (9)(7)=63 The total area of the block is 128 square inches. The area surrounding the parallelogram can be found by subtracting 63 from 128.

A child's toy harp is in the shape of a trapezoid as shown. In square inches, what is the area of the harp?

64 in2

What number should Rhianna use for the height of the parallelogram if she uses 28 inches for the base?

7 in

Jasmine wants to make a path from one corner of her yard to the other as shown. The path will be 3 feet wide. What is the area of the path?

90 sq ft

The Saxena family plans to install a light to illuminate part of their rectangular yard. Nikki and Dylan each proposed a different spot to place the light. The proposed placements and the lit area that each produces are shown below. How do Nikki's and Dylan's proposals compare? Check all that apply. Nikki's proposed placement will light a greater area than Dylan's placement. Dylan's proposed placement will light a greater area than Nikki's placement. Both proposed placements will light the same sized area. Nikki's proposed placement will light more than half the yard. Dylan's proposed placement will light more than half the yard. Dylan's proposed placement will light exactly half of the yard. Nikki's proposed placement will light less than half of the yard.

Both proposed placements will light the same sized area. Dylan's proposed placement will light exactly half of the yard.

Layla is determining the area of the trapezoid. Her work is shown below. Step 1: Break the figure into rectangles and triangles. Step 2: Find the area of the rectangle: 8*10=80 Step 3: Find the area of the triangle: 1/2*6*8=24. Step 4: Add the areas together: 80+24=104 square feet. Which best describes Layla's error? The height of the triangle in Step 1 should be 4 ft. The area of the triangle in Step 3 should be 1/2*6*10=30. The area of the triangle is Step 3 should be halved because there is only one triangle. The areas in Step 4 should be multiplied instead of added.

The area of the triangle in Step 3 should be 1/2*6*10=30