Richard's Test Scribe

Rectangular Prism

lxw

Top - 6cm, 5cm 6x5 = 30cm2
6x5 = 30cm2

Front - 20cm, 6cm
20x6 = 120cm2
20x6 = 120cm2

Side - 20cm, 5cm
20x5 = 100cm2
20x5 = 100cm2
-------------------
TSA = 500cm2

Cylinder

d÷2 = r

8÷2 = r

8÷2 = 4cm2

(2 x 3.14 x 4 x 4) + (2 x r x 3.14 x 15)

100.48cm2 + 376.8cm2

= 477.28cm2

Rate - Compares two quantities measured in different units
Example - $1.09 per 100g or $1.69/100g


Ratio - Two term ratio compares two quantities measured in the same units
Example - 7:20 or 7 to 20

Proportion Reasoning - A relationship that says that two ratios or two rates are equal
Example - $3.00/12 erasers