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Can someone please help me :(
Look at your prism, how many triangles side does it have?
No, i asked triangular sides
Yes, and how do we find the surface area of a triangle?
Do you remember the following formula S=base x height/2
Now, this is for a 90 degree triangle So we gonna use the general formula S=base x height, So, what's the triangle base?
umm 8 in is the base
And the height?
Yes, now how much is base x height?
Keep this result, now we gonna find the rectangular surface
ok doki loki
How many rectangle 10x5 are there?
Yes this is the surface but how many rectangle with 10 in and 5 in sides are there?
How many sides of the prism that are rectangle with 5 in and 10 in sides?
Yes, so two sides with 50 in squared each, what's the sum of the surface for these two sides?
wait no 100
Yes. Now the last side is the base of the prism, what figure does that looks like?
No, asked what figure does that looks like?
It's a rectangle with 10in and 8 in side isn't it?
What's it surface?
5 in -.-?
S= base x height
-.- ummm 80?
Yessss, now you must sum 24+100+80