**30**small linking cubes.

**a)**She wants to use

**18**of them to make a large cube. Is this possible? Why or why not?

**b)**What number of linking cubes would she use to construct the largest cube she can

possibly make?

**My Answers**

**a)**It is

**not**possble to make a large cube with only

**18**linking cube because there isn't a whole number that can make

**18**when cubed. To get

**18**, each side of the cube should have

**2.6207413942088964**cubes.

**b)**v = s x s x s

v =1y x 1y x 1y

v =

**1y³**

v = s x s x s

v = 2 x 2 x 2

v =

**8³**

v = s x s x s

v = 3 x 3 x 3

v =

**27³**

v = s x s x s

v = 4 x 4 x 4

v =

**64³**

The

**largest**cube Suki can make with only

**30**linking cubes uses

**27**cubes.

**19**. Melissa has

**three**glass vases. She wants to use one as a decorative fish tank for Harvey the

guppy. Which will give Harvey the

**most**water to swim in?

**Cube Tank**

v = s x s x s

v = 7cm x 7cm x 7cm

v=

**343cm³**

**Rectangular Prism Tank**

v = l x w x h

v = 10cm x 9cm x 4cm

v =

**360cm³**

**Triangular Prism Tank**

v = b x h(1) / 2 x h(2)

v = 7cm x 5cm / 2 x 21cm

v =

**367.5cm³**

The

**triangular prism tank**can contain the most water.

Cylinder Volume and Volume Problems

**a)**r = d ÷ 2

r = 2m ÷ 2

r =

**1m**

v =

**π**x r² x h

v = 3.14 x 1² x 0.6

v =

**1.884m³**

**b)**h = v ÷ a of b

h = 1.256 ÷ 3.14

h =

**0.4m**

**c)**v = pi x r² x h

v = 3.14 x 1² x 0.2

v =

**0.628m³**

d ÷ 2

r = 120 ÷ 2

r =

**60cm**

**a)**v = pi x r² x h

v = 3.14 x 60² x 18

v =

**3391.2cm³**

**b)**v = l x w x h

v = 30 x 22 x 24

v =

**15840cm³**

**c)**15840cm³ x 1 = 15840cm³

15840cm³ x 2 = 31680cm³

15840cm³ x 3 =

**47520cm³**

She would have to fill it

**3**times

Great job Hanna! Your post has alot of details and it is very colourful. I lie how you your answers and your questions are different coulours so it easy to identify. great job.

ReplyDeleteGreat post Hanna, I like how you highlighted the answer, or important word in the sentence.

ReplyDelete