Who would use a spade this big?
Possible exam question:
What is a reasonable estimate for the height of the giant who owns this spade?
State clearly any assumptions you have made.
Estimate height of that spade.
Estimate height of standard spade.
Estimate height of average adult male (or female or child if stated).
Calculate spade to person ratio based on their real world estimates. (Or normal spade to giant spade ratio.)
Assume spade to person ratio is similar in giant land. (Or equivalent. )
Calculate height of Giant.
Plus up to 3 marks for clarity of explanation (eg no words but all appropriate sums would be one mark. succinct sentences explaining each calculation would be three marks.)