Changes in Dimensions
Each side length of a parallelogram is scaled by x4. What would be the change in the perimeter?
The perimeter would be 4 times bigger.
Find the area of a trapezoid:
base1 = 5 cm
base2 = 9 cm
height = 4 cm.
Include units in your answer.
28 cm²
The area of a parallelogram with a base of 7 m and a height of 4 m. Include units in your answer.
28 m²
The area of a triangle with a base of 9 cm and a height of 4 cm. Include units in your answer.
18 cm2
The length of a rectangle with an area of 36 cm² and a width of 4 cm. Include units in your answer.
9 cm
The base and height of a triangle are going to be made 3 times bigger to create a new triangle. What would be the change in the area?
It would be 32 times bigger which is 9 times bigger.
The area of a trapezoid:
base 1 = 3m
base 2 = 1m
height = 2m.
Include units in your answer.
4 m²
The area of a parallelogram with a base of 8 cm and a height of 7 cm. Include units in your answer.
56 cm²
The area of a triangle with a base of 2 m and a height of 5 m. Include units in your answer.
5 m²
The length of a square with an area of 64 m². Include units in your answer.
8 m
The perimeter would be 1/3 the original perimeter and the area would be (1/3)2 which is 1/9 the original area.
The area of a trapezoid:
height = 17cm
base 1 = 13cm
base 2 = 10cm.
Include units in your answer.
195.5 cm²
The area of a parallelogram with a base of 4 cm and a height of 4.5 cm. Include units in your answer.
18 cm²
The area of a triangle with a base of 10 km and a height of 4 km. Include units in your answer.
20 km²
Find the height of the parallelogram. Include units in your answer.
Area = 36 meters2
Base = 12 meters
3 meters
A stop sign is in the shape of a regular octagon. Sign A has side lengths that are 8 inches and an area of 309 square inches. Sign B has side lengths that are 12 inches. What would be the area of sign B? Include units.
695.25 square inches
Explanation:
Since 8 x 1.5 = 12, the area of sign B is 1/5^2 times the area of 309 square inches. What is the area of sign B?
The area of a trapezoid with a base 1 of 5cm, a height of 7cm and a base 2 of 9cm. Include units in your answer.
49 cm²
Find the area of a parallelogram with a base of 12.25 m and a height of 1.6 m WITHOUT a calculator. Include units in your answer.
19.6 m2
The area of a triangle with a base of 70 mm and a height of 6 cm? GIVE YOUR ANSWER IN CM. Include units in your answer.
21 cm²
Find the height of a triangle with a base of 12 cm and an area of 48 cm². Include units in your answer.
8 cm
A dollhouse has a bed with dimensions 1/12 the size of an adult queen-sized bed. The queen-size bed has an area of 4,800 square inches, and a length of 80 inches. What are the side lengths of the dollhouse bed?
5 and 6 2/3 inches.
Explanation:
Use the area and length to find the width of the queen-size bed. The width of the bed is 4,800 / 80 = 60 inches. So the width of the dollhouse bed is 60 x 1/12 = 5 inches. The length of the dollhouse bed is 80 x 1/12 = 6 2/3 inches.
Find the area of a trapezoid WITHOUT using a calculator that has the following dimensions:
b1 = 22 1/2
b2 = 25
h = 19 4/5
Include units in your answer.
470 1/4 feet squared
Find the area of a parallelogram whose base is 6.25m and height is 4.5m WITHOUT a calculator. Include the units in your answer.
28.125 metes squared
Write an algebraic expression that can be used to find the area of a triangle that has a base of 5 units and a height of x units.
5x/2
Find the height of a trapezoid WITHOUT using a calculator. Include units in your answer.
Area=240 cm²
b1= 20 cm
b2 = 40 cm
8 cm