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January 20th, 2010

LOG PROBLEM

What is the area of a triangle with a base of 10 cm and height of 5 cm?

WORK TODAY

We will draw obtuse triangles and measure the base and height. We will then use the formula to calculate the area of the triangle.

We will continue with the area problems we were working on yesterday and check our answers.

ANSWERS TO WORKSHEET
1)24 cm^2
2)4.48 cm^2
3)10cm^2
4)144cm^2
5)161.5cm^2
6)416cm^2
7)261cm^2
8)758.5cm^2
9)36m^2
10)105m^2
11)168m^2
12)5.22cm^2
13)11.07cm^2
14)248.2cm^2
15)54.72cm^2
16)90.52m^2
17)196.8cm^2
18)13.63m^2
19)51.45m^2
20)118.69cm^2

HOMEWORK

What is the area of a triangle with the following dimensions:
1) base = 5 cm, height = 9 cm
2) base = 14 cm, height = 19 cm
3) base = 57 cm, height = 61 cm
4) base = 2.3 cm, height = 5.4 cm
5) base = 22.9 cm, height = 36.3 cm

1. Make sure worksheet is complete.
2. Complete the first five problems on your sheet dealing with Parallelograms.