Question

need help with surface area

Answer 1

I can help you!! What shape is it?

Answer 2

is it 461 in sq?

Answer 3

almost....i got a slightly smalle ans....i think u may have double-counted some areas....

Answer 4

Show your work, please

Answer 5

area of the rectangle prism=2(7*3+16*7+16*3)

=362 in^2

area of prism=3*6+5*6+6*6+1/2*2*5*3

=99 in^2

so total area=99+362

Answer 6

???

Answer 7

the two triangle pieces "1/2*2*5*3" are double-counted....looking at the shape and remember it is ONE pieces....

Answer 8

im not getting it ..

Answer 9

bottom of the triangular prism is attached to the top of the rectangluar prism....with me so far?

Answer 10

ok

Answer 11

so for the one top triangle, its area should be counted....
but it can also be used to fill the bottom triangular hole on the rectangular prizm.

So "the two triangle pieces "1/2*2*5*3" are double-counted" and the ans should be 446 instead :)