Area of a Triangle
What is the formula for the area of triangle?
Area = 1/2 (b)(h)
The area of a parallelogram is the same as the area of a rectangle.
True or False
True
Find the area of a trapezoid with the following measurements.
Bases = 10 cm and 6 cm, height = 4 cm
32 cm2
Write the formula for volume.
Volume = L x W x H
Find the area of a rectangle: length = 8, width = 3
24
A triangle is drawn on a grid. Base = 6 units, height = 4 units.
12 square units.
Find the area: base = 9 cm, height = 4 cm
36 cm2
Find the area of a trapezoid with the following measurements:
Bases = 8 m and 4 m, height = 5 m
Answer: 30 m²
True or False
False
A composite figure is made of two rectangles:
Area 1 = 20, Area 2 = 15
What is the total area of the figure?
Answer: 35 units2
Find the area of a triangle with base = 10 cm and height = 6 cm.
30 cm2
Two parallelograms have the same base and height. One is slanted more. Do they have the same area?
Yes or No
Yes
A student adds the bases but forgets to divide by 2. What incorrect answer do they get if height = 6 and bases are 10 and 2?
Answer: 72
How many sides does a hexagon have?
6
Find the perimeter of a rectangle with the following measurements: length = 10, width = 4
28
Find the area of a triangle with a base of 23 and a height of 10.
Area = 115 units2
A student uses the slanted side (5 cm) instead of the height (3 cm). What incorrect area do they get if base = 8 cm?
Answer: 40 cm²
Area = 40 cm², bases = 6 cm and 4 cm. Find the height.
Answer: 8 cm
A box is 5 cm long, 2 cm wide, and 6 cm high. What is the volume of the box.
60 cm³
A square has area 36. What is the side length?
6
A triangle has base 12 cm and height 7 cm. A student forgets to divide by 2. What incorrect answer do they get?
84 cm
Area = 48 cm², base = 6 cm. Find the height.
A trapezoid is split into a rectangle and two triangles. Why does this help?
It makes area easier by breaking into known shapes
Two prisms both have a volume of 60. One is 5×3×4, another is 10×3×2.
Which has more volume?
They both have the same volume.
A rectangle has area 40 and width 5. Find the length.
8