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# Solutions

In these videos, you will watch Georgeta working through the solutions to the maths problems you saw in the previous step.

Here you can watch Georgeta working through the solutions to the problems you saw in the previous step. As you watch, listen for the key vocabulary in each video.

## Problem 1

### Question

I am giving this box of books to a friend.
The box is tied with string lengthwise and widthwise. The box’s length is 50 cm, width 25 cm and depth or height is 10 cm. If you allow 20 cm for the bow, how much string is needed?

### Key Vocabulary

 rectangular prism (n.) /rec – TAN – gu – lar/ /PRI – sm/ add up (v.) lengthwise (adv.) /LENGTH – wise/ centimetres (n.) /CEN – ti – me – tres/ plus (prep.) /PLUS/ equals (v.) /E – quals/ widthwise (adv.) /WIDTH – wise/ calculation (n.) /cal – cu – LA – tion/ equals (v.) /E – quals/

### Solution

This is an additional video, hosted on YouTube.

Having problems watching this video? Listen to the audio and view this PDF of the transcript and working.

## Problem 2

### Question

Calculate the volume of the box from problem 1 in cubic centimetres (cm3).

### Key Vocabulary

 volume (n.) /VO – lume/ length (n.) /LENGTH/ times (prep.) /TIMES/ width (n.) /WIDTH/ height (n.) /HEIGHT/ cubic centimetres (n.) /CU – bic/ /CEN – ti – me – tres

### Solution

This is an additional video, hosted on YouTube.

Having problems watching this video? Listen to the audio and view this PDF of the transcript and working.

## Problem 3

### Question

This square has a perimeter of 240 cm. Divide the square to form 6 equal rectangles. What is the length and width of one of these rectangles?

### Key Vocabulary

 solve (v.) /SOLVE/ perimeter (n.) /pe – RI – me – ter/ square (n.) /SQUARE/ centimetres (n.) /CEN – ti – me – tres/ side (n.) /SIDE/ equal (adj.) /E – qual/ rectangle (n.) /REC – tan – gle/ divide (v.) /di – VIDE/ width (n.) /WIDTH/

### Solution

This is an additional video, hosted on YouTube.

Having problems watching this video? Listen to the audio and view this PDF of the transcript and working.

## Discussion

Can you think of another way to solve problem 3? Explain it in the comments below.

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