Perimeter and Area
What is the formula to find the perimeter of any shape?
Add all sides together
Write the following in exponential form.
13 x 13 x 13 x 13 x 13 x 13 x 13
13^7
a four sided shape that has all equal sides and right angles
square
What is an equivalent fraction of 2/5?
4/10, 6/15, 8/20, etc.
How do you find the area of a triangle? (formula)
Base x height / 2
Evaluate.
(2+3) x 4
20
a quadrilateral with opposite parallel sides but no right angles.
parallelogram
What is this fraction in its simplest form?
60/100
3/5
What is the formula to find the area of a parallelogram?
Same as a rectangle (base x height)
Evaluate. (2 x 3^2) + (2 + 4^2)
(18) + (18)
= 36
a polyhedron with a circular base and meets up at the top like a party hat.
cone
Write this fraction as a percent.
4/5
80%
How do we find the area of a composite shape?
- break it into simple shapes
- find the area of each shape
- add them all together
Evaluate.
15^5
759375
a polyhedron with 6 faces that are of different dimensions, 12 edges and 8 vertices.
rectangular prism
Write this fraction as a percent.
8/9
about 89% or 88.9%
What is the formula to find the area of a trapezoid?
[(a+b) x height] / 2
Evaluate.
(16 / 4) x (13 - 4) + (5^3 / 5) - 7
(4) x (9) + (25) - 7
36 + 25 - 7
= 53
a polyhedron with 2 bases that are each with 9 sides.
a nonagonal prism
Write this percent as a fraction in its simplest form.
66.67%
about 2/3.