Download - Gen1101 ch2
Area & Volume
2D-Geometric shape
3D-Geometric shape
Perimeterof 2D shape
• a path that surrounds a two-dimensional shape.
• it can be thought of as the length of the outline of a shape.
• Pythagorean Theorem.
• A² + B² = C².
Length units
Area
Area
Area unit
Square units
• amount of squares it would take to cover the figure completely.
• i.e.>>>– a rectangle is cm and the
other side is cm.
we get cm-squared (cmXcm)
– Circle with r cm radius
A = pi r^2 (cmXcm)
Square Meter
Square Millimeter
Square Centimeter
Square Kilometer
Area unit conversion
Rai-Ngan-Tarangwa
• 1 Rai = 4 Ngan = 400 Tarang Wa = 1600 Sq.m
• 1 Ngan = 100 Tarang Wa = 1/4 Rai = 400 Sq.m
• 1 Tarang Wa = 1/100 Ngan = 1/400 Rai = 4 Sq.m
Convert square foot to square inch..?
• 1 square meter = 10,000 square centimeter
• 1 square kilometre = 1,000,000 square meter
• 1 square foot = 144 square inch
• 1 rai = 4 ngan
• 1 ngan = 100 tarang wa
• 1 rai = 400 tarangwa
• 1 tarangwa = 4 tarang meter
• 1 tarang wa= 4 square meter
Surface area
Total surface area
Volume
• quantity of three-dimensional space enclosed by some closed boundary
Volume unit conversion
• 1 ml = 1 cm3
• 1 m3 = 1,000,000 cm3
• 1 L = 1,000 cm3 = 1,000 ml
• 1 m3= 1,000 L
• 1 cup = 8 ounce
• 1 teaspoon = 5 cm3
• 1 cup = 240 cm3
Fill me up!
Conclusion
Area
Volume