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Geo 9.1 day2 Solving for variables
Contributed by: DiLaura
(Original author: Lehnert)

The area of the rhombus above is 80x2 mm2.  Find

the length of d2.

d1=16x mm
d2 = 
d2=?
mm

45a2 units2

22.5a3 units2

Find the area of the kite above.
A
B
D
d2=3a2

22.5a2 units2

45a3 units2

d1=15a

C

Find the height of a triangle whose area is

54x2 square feet and has a base of 9x feet.

45x feet

6x feet

12 feet

12x feet

a.  Find the height of the trapezoid.
b.  Find the area of the trapezoid.
5

x

units
units2
hint: 28 is the length
of the whole bottom side

Find the area of a square with side length

12x cm.

12x2 cm2

48x cm

48x2 cm2

144x2 cm2

Find the area of a rectangle that has a width

of a inches and a length that is three

times the width.

8a inches

3a2 inches2

4a2 inches2

a2+3a inches2

Find the area of the Trapezoid.Round to the nearest tenth.
Area = 
in2
Find the Area of the parallelogram.Round to the nearest integer.
Area = 
in
 192 in2
 96 in2
 96y2 in2
192y2 in2
Find the Area of the Rhombus
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