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Ruhhr
 3 years ago
the figures are similar. The area of one figure is given. Find the area of the other figure to the nearest whole number. The area of the large triangle is 177 ft²
(will draw figure below) ..
A) 100 ft² .. B) 347 ft² .. C) 196 ft² .. D) 90 ft²
Ruhhr
 3 years ago
the figures are similar. The area of one figure is given. Find the area of the other figure to the nearest whole number. The area of the large triangle is 177 ft² (will draw figure below) .. A) 100 ft² .. B) 347 ft² .. C) 196 ft² .. D) 90 ft²

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Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1349190507668:dw (not drawn to scale)

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0What is 14 ft and 10 ft?

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0Sorry, getting caught up in my work.. & yeah it shows the lenght of the sides... I got that already..

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0I'm not really good at this but the ration of the sides are the same right?

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0Ratio: is a comparison of two quantities by division.

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0So 14:10 = AB:PQ = BC:QR

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0How does it equal 7.5 though? What did you do to get to 7.5?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0No not 7.5 its 7:5. If you divide 14:10 by two, you get 7:5(14/2:10/2). Got that?

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0Oh yes! Got it! Then what do you do?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Area of ABC = 177 ft^2 Lets take the base as 14 ft so that we can find the altitude to that base. You need the altitude and the corresponding base to get the area. 1/2 * base * height = 177 1/2 * 14 * h = 177 h = (177 * 2)14 = 25.3 approx. (25.28)

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Pretty straightforward now.

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0wait how did you get 177 when all it provides is 14?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0The area is 177 right? Its given.

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Area of the largest triangle is 177 ft^2.

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0sorry larger. Got that?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0So even the heights of the two triangles are in the ratio of 7:5. So lets take the height to the base 10 ft in PQR as x. 25.3:x = 7:5 => 25.3/x = 7/5 Can you find x?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Lost on how to find x?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Hint  In the equation 25.3/x = 7/5, cross multiply. You'll get 25.3 * 5 = 7x. Now?

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0I get 7x = 127.5 by cross multiplying

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0I get 7x = 127.5 by cross multiplying

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0and when i divide that.. i get 18.21

Ruhhr
 3 years ago
Best ResponseYou've already chosen the best response.0igtg to my next class now

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0Yep that's right. So now we have the corresponding base and height for PQR. 1/2 * 18.21 * 10 Easy now?

pratu043
 3 years ago
Best ResponseYou've already chosen the best response.0You get 91.05. I think you should round off to the nearest ten and write it as 90.
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