VOLUME AND SURFACE AREA

REVIEW

FIND THE VOLUME OF EACH FIGURE.

V = lwhV = (6)(7)(10)V = 420 cm³

V = BhB = (1/2)(6)(8) = 24

V = (24)(12)V = 288 units³

VOLUMEThe volume of a solid is the

amount of space inside the solid.Volume is measured in cubic units.

FormulasVolume of Rectangular

Solids = lwhl = lengthw = widthh = height

Volume of NON-rectangular solids =

BhB = Area of the base

h = height

FIND THE SURFACE AREA USING THE NET

4 x 10 = 40 cm²17 x 10 = 170 cm²4 x 17= 68 cm²Add them up!SA = 40 + 40 + 170 + 170+ 68 + 68

SA = 556cm²

EXAMPLE• HOW MUCH WRAPPING PAPER DO YOU NEED TO

COMPLETELY COVER A RECTANGULAR BOX THAT IS 20 INCHES BY 18 INCHES BY 6 INCHES?

SA= 2B + Ph

SA= 2(360) + 76(6)

SA= 720 + 456

SA= 1176 in²B = 20 x 18 = 360 in²P = 20 + 20 + 18 + 18 =

76 in

FIND THE SURFACE AREA

SA= 2B + Ph

SA= 2(24) + 24(12)

SA= 48 + 288

SA= 336 units²

SURFACE AREA AND VOLUME VIDEO

SKILLS CHECK!WHEN YOU FINISH TURN YOUR PAPER OVER AND PUT IT IN THE CORNER OF YOUR DESK. NO TALKING.