8.01 Area

Find the area of the following rectangles:

a

b

c

d

Find the area of a rectangle whose length is 12 \text{ cm} and width is 5 \text{ cm}.

Find the area of a rectangle whose length is 11 \text{ m} and width is 8 \text{ m}.

If the area of a rectangle is 99 \text{ cm}^2 and its width is 9 \text{ cm}, find its length.

If the area of a rectangle is 160 \text{ cm}^2 and its length is 20 \text{ cm}, find its width.

Find the area of the following squares:

a

b

c

Find the length of each side of a square whose area is:

Find the area of the following triangles:

a

b

c

d

e

f

g

Find the value of the pronumeral for each of the following triangles, given the area:

a

The area of this triangle is 20\text{ mm}^2

b

The area of this triangle is 48\text{ m}^2 .

c

The area of this triangle is 130 \text{ cm}^2.

Find the base of the triangle whose area is 17.5 \text{ cm}^2 and height is 5 cm.

Find the area of the following parallelograms:

a

b

c

d

Find the area of a parallelogram with:

Find the base length of a parallelogram with area of 96 \text{ cm}^2 and perpendicular height of 8\text{ cm}.

Find the height of a parallelogram with area of 84 \text{ cm}^2 and perpendicular base length of 6\text{ cm}.

Find the perpendicular height, h, of a parallelogram that has an area of 45 \,\text{cm}^2 and a base length of 5 \,\text{cm}.

Find the base length, b, of a parallelogram that has an area of \, 216 \,\text{mm}^2 and a perpendicular height of 12 \,\text{mm} .

Find the area of the following trapeziums:

a

b

c

d

e

f

Find the area of each rhombus below:

a

b

c

x = 10 and y = 12

d

x = 4\,\text{cm} and y = 8\,\text{cm}

e

Find the area of the following kites:

a

b

c

The area of a kite is 308 \text{ cm}^2 and one of the diagonals is 47 cm. If the length of the other diagonal is y cm, what is the exact value of y?

Sharon has purchased a rectangular piece of fabric measuring 12 m in length and 7 m in width. What is the area of the largest triangular piece she can cut out from it?