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August 14th, 2018, 11:07 AM   #1
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Perimeter

Another tent has the perimeter of 7.2 metres.
If the width is 1.3 metres, what is the length?
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August 14th, 2018, 11:54 AM   #2
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The semiperimeter is 3.6 m, so the length is (3.6 - 1.3) m, i.e. 2.3 m.
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August 14th, 2018, 12:32 PM   #3
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Quote:
Originally Posted by sezwillow84 View Post
Another tent has the perimeter of 7.2 metres.
If the width is 1.3 metres, what is the length?
Can you tell us WHY you're still having problems with these
basic perimeter problems?
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August 14th, 2018, 12:54 PM   #4
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I don't know why I am having problems with these problems but can't get my head around it
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August 14th, 2018, 01:33 PM   #5
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Code:
A          10          B

6                        6

D          10          C
Above is rectangle ABCD, with dimensions 6 by 10; ok?

It's area is 6 * 10 = 60 sq. units; ok?
(notice that * is now used as multiplication sign...NO longer x)

It's perimeter is 6 + 10 + 6 + 10 or 2*(6 + 10) = 2*16 = 32; ok?

IF you're told width = 6 and perimeter = 32, length L is calculated this way:
L + L + 6 + 6 = 32
2*L = 32 - 6 - 6
2*L = 32 - 12
2*L = 20
L = 20/2 = 10 ; ok?

Clear? Any questions?
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