4. Calculate the volume of each rectangular prism.
a) l = 15 cm, w = 12 cm, h = 3 cm
v = l x w x h
v = 15 x 12 x 3
v = 180 x 3
v = 540cm3
Jumbo
r = d/2
r = 20 / 2
r = 10cm
v = (πr2) x h
v = (3.14 x 102) x 40
v = (3.14 x 100) x 40
v = 314 x 40
v = 12, 560cm3
Popcorn Lover's
r = d/2
r = 30/2
r = 15cm
v = (πr^2) x h
v = (3.14 x 15^2) x 20
v = (3.14 x 225) x 20
v = 706.5 x 20
v = 14, 130cm^3
Popcorn Lover's has more space.
r = d/2
r = 20 / 2
r = 10cm
v = (πr2) x h
v = (3.14 x 102) x 40
v = (3.14 x 100) x 40
v = 314 x 40
v = 12, 560cm3
Popcorn Lover's
r = d/2
r = 30/2
r = 15cm
v = (πr^2) x h
v = (3.14 x 15^2) x 20
v = (3.14 x 225) x 20
v = 706.5 x 20
v = 14, 130cm^3
Popcorn Lover's has more space.
Full Circle
r = d/2
r = 1/2
r = 0.5m
v = (πr^2) x h
v = (3.14 x 0.5^2) x 10
v = (3.14 x 0.25) x 10
v = 0.785 x 10
v = 7.9m^3
"Hole" Circle
r = d/2
r = 0.8/2
r = 0.4m
v = (πr^2) x h
v = (3.14 x 0.4^2) x 10
v = (3.14 x 0.16) x 10
v = 0.5024 x 10
v = 5.1m^3
7.9 - 5.1 = 2.8m^3
Concrete volume is 2.8m^3.
Sweet scribe Ryan, thanks for the answers. I also really like how you added so much detail! :)
ReplyDeleteGood Job Ryan! Your post is neat and understandable. I like how your pictures are big and the font colour. keep up the good work .
ReplyDelete