Mathematics
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OpenStudy (anonymous):
The perimeter of a rectangle with base 10 in. and height 13 in. is _____. Be sure to include units.
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OpenStudy (anonymous):
just multiply both of them by two because there are two lengths of each
OpenStudy (anonymous):
then add them for perimeter
OpenStudy (anonymous):
so it is 20 + 26
OpenStudy (anonymous):
what would be the units?
OpenStudy (anonymous):
what does it say in the problem?
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OpenStudy (anonymous):
inches!
OpenStudy (anonymous):
right!
OpenStudy (anonymous):
what about this one The area of a triangle with base 19 in. and height 11 in. is _____. Be sure to include units.
OpenStudy (anonymous):
one half the base times the height
OpenStudy (anonymous):
so 19x11
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OpenStudy (anonymous):
then divide that by 2
OpenStudy (anonymous):
i got 104.5?
OpenStudy (anonymous):
well then you would be correct
OpenStudy (anonymous):
inches squared, remember the units
OpenStudy (anonymous):
ok one last one, The area of a circle with a radius of 15 in., to the nearest tenth is _____. Be sure to include units.
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OpenStudy (anonymous):
now this one is a little different
OpenStudy (anonymous):
you first have to know the formula for area of a circle
OpenStudy (anonymous):
do you?
OpenStudy (anonymous):
is it pi times the radius squared?
OpenStudy (anonymous):
ok
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OpenStudy (anonymous):
lol is it?
OpenStudy (anonymous):
yes or no
OpenStudy (anonymous):
47.1?
OpenStudy (anonymous):
no you forgot to square fifteen
OpenStudy (anonymous):
so then what would it be if i squared it?