Unit 1 - Day 2:

Day 2:

Daily Objective: Students will know the formulas of area. We will introduce concept of scale. 

Lets go over area again. The area of a square is b x h, the area of a rectangle is l x w, the area of a triangle is b x h / 2, the area of a trapezoid is b1 + b2 /2 x h, the area of a parallelogram is b x h, the area of a circle is pi x radius squared, and last the area of a polygon is 1/2 the apothem x perimeter,

The concept of scale : The concept of scale is to find the length of a smaller side using the area of a larger side or the length of a side on a different figure by solving for x. Scale is used to find the measurements you need for something using smaller numbers.

Quiz 2:

Quiz 2: Answers: 

Question 1 - Find the area of the circle

       1.) Area of a circle formula: pi x radius squared

       2.) The diameter is 24" and half the diameter is 12", which is the radius

       3.) 12 x 12 =144

       4.) 144 x 3.14(pi)  = 452.16" squared

Answer : 452.16" squared

Question 2 - Find the area of the rectangle 

       1.) Area of a rectangle formula: b x h 

       2.) 15 x 4 = 60"

Answer: 60"

Question 3 - Find the area of the trapezoid

       1.) Area pf a trapezoid formula: B1 + B2 / 2 x Height

       2.) B1 + B2 = 20"

       3.) 20/2 = 10" 

       4.) 10 x 6 = 60 " squared

Answer: 60"