Question

(a)How many small cubes will Susan need to make the block shown in Diagram B?
(b) Susan realises that she could have glued small cubes together to look like Diagram C, but the block could have been hollow on the inside. What is the minimum number of cubes she needs to make a block that looks like the one shown in Diagram C, but is hollow? (c)Now Susan wants to make a block that looks like a solid block that is 5 small cubes long, 4 small cubes wide and 3 small cubes high. How many small cubes will be required to make the block ?

Answer 1

Q.10. Susan likes to build blocks from small cubes like the one shown in the following

Diagram :

Small cube (A) (B) (C)

Susan has lots of small cubes like this one. She uses glue to join cubes together to make

other blocks. First, Susan glues eight of the cubes together to make the block shown in

Diagram A. Then Susan makes the solid blocks shown in Diagram B.

(a)How many small cubes will Susan need to make the block shown in Diagram B?

(b) Susan realises that she could have glued small cubes together to look like

Diagram C, but the block could have been hollow on the inside.

What is the minimum number of cubes she needs to make a block that looks like

the one shown in Diagram C, but is hollow?

(c)Now Susan wants to make a block that looks like a solid block that is 5 small cubes long, 4

small cubes wide and 3 small cubes high. How many small cubes will be required to make the

block ?