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 2 years ago
Find one area of each triangle. Round intermediate values of the nearest tenth. Ust the rounded values to calcuate the next value. Round your final answer to the nearest tenth. Please help and show work! Drawing Below >!
 2 years ago
Find one area of each triangle. Round intermediate values of the nearest tenth. Ust the rounded values to calcuate the next value. Round your final answer to the nearest tenth. Please help and show work! Drawing Below >!

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AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0So, what is the formula for area of a triangle?

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0a2 +b2= c2 and a= 1/2 bh.

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0ok, so we have the height. We want to find the base length to plug into the area formula Of course, you went a step ahead and gave the next formula as well. We would have to use Pythagorean Theorem to determine the length of the base. a^2 + b^2 = c^2

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0So would it be a2 +8^2 =7^2

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0In a^2 + b^2 = c^2, the a^2 and b^2 represent the squared lengths of the legs of the triangle. The c^2 represents the hypotenuse length squared. dw:1337037273817:dw

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0So you'd have 7^2 + b^2 = 8^2. We'd solve for b there.

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0Ok so it would be 7^2 + b^2 = 8^2?

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0Once we find b there, we round it to the nearest tenth and then apply it in the area formula with the height 7 and that as the base.

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0So what would the total answer be for the a2 + b2 = c2?

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.07^2 + b^2 = 8^2 49 + b^2 = 64 b^2 = 15 b = sqrt{15} then you can evaluate this in calculator to round it to nearest tenth

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0I typed it in and squared rooted it and I still got 15

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0Hm maybe it was typed in wrong. I get sqrt(15) ~ 3.87298

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0So would the round to 4?

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0we round it to nearest tenth, so we look at the 3.87 and determine whether to keep 3.8 or go to 3.9

28Tylerr
 2 years ago
Best ResponseYou've already chosen the best response.0We would keep it at 3.9?

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, we use 3.9. So, just plug it into area formula \(A = \frac{1}{2} b h \) with b = 3.9 and h = 7 and solve for A. It looks like you have to round the value of A to nearest tenth also.

AccessDenied
 2 years ago
Best ResponseYou've already chosen the best response.0So, what I get is A = 1/2 (3.9) (7) = 13.65 = 13.7 rounded up to nearest tenth.
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