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2 votes
2 votes
Can you help with these two questions please

Can you help with these two questions please-example-1
Can you help with these two questions please-example-1
Can you help with these two questions please-example-2
User Eric MJ
by
3.2k points

1 Answer

19 votes
19 votes
The first question is relatively harder
So let’s start with that
Area of circle is 3.14(r^2)
We are given the diameter as 20m
So radius is 10m
Thus area = 3.14(100)= 314 sq metres
Now each box covers 58 sq metre
So no of boxes = 314/58= 5.41
Rounding to 1 significant figure
It’s 5 boxes
Clearly we are underestimating it as it’s around 5 boxes and a half

For the second question just equate their area
(11)(10)/2 = 22b
=> b= 2.5cm
User Gire
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2.5k points