Application Practice
Practice
Practice 1
Find the area of a rectangle with length 12 cm and width 8 cm.
Practice 2
Find the area of a triangle with base 10 in and height 6 in.
Practice 3
A room is 15 ft by 12 ft. How much carpet is needed to cover the floor?
Practice 4
Find the surface area of a cube with sides of 5 cm.
Practice 5
Find the volume of a rectangular prism: length = 8 cm, width = 4 cm, height = 3 cm.
Practice 6
A composite figure is made of a rectangle (10x6) with a triangle (base 6, height 4) on top. Find total area.
Practice 7
Find surface area of a rectangular prism: 5 cm x 3 cm x 2 cm.
Practice 8
A gift box is 12 in x 8 in x 4 in. How much wrapping paper is needed (surface area)?
Practice 9
The area of a square is 64 sq cm. What is the side length?
Practice 10
A fish tank is 24 in long, 12 in wide, and 15 in tall. How many cubic inches of water can it hold?
Answers
Click to reveal answers
1. 12 x 8 = 96 sq cm
2. (1/2) x 10 x 6 = 30 sq in
3. 15 x 12 = 180 sq ft
4. 6 x (5 x 5) = 6 x 25 = 150 sq cm
5. 8 x 4 x 3 = 96 cu cm
6. Rectangle: 60 + Triangle: (1/2)(6)(4) = 12. Total = 72 sq units
7. 2(5x3) + 2(5x2) + 2(3x2) = 30 + 20 + 12 = 62 sq cm
8. 2(12x8) + 2(12x4) + 2(8x4) = 192 + 96 + 64 = 352 sq in
9. Side = 8 cm (since 8 x 8 = 64)
10. 24 x 12 x 15 = 4,320 cu in