A car travels at 50mph, correct to 1 significant figure. It covers a distance of 300 miles, correct to 2 significant figures. Calculate the least possible time taken.
5 and 4/11 hours
What is an expression?
(x+4)^2
The surface area of A is 500cm² The surface area of B is 2000cm² The length A is 6cm. Find the length of B
12cm
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