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# pls help me

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pls help me with these three questions

Mar 3, 2018

#1
+18106
+3

Find two similar sides and express as a ratio:

WX/RS = 20/24 = 5/6

Let  B  and  H   be the dimensions of   DEF

then  ABC  is   6/10  B     and    6/10  H

Area = 1/2 BH  for a triangle  so the ratios of the areas would be

(1/2  6/10  B  6/10 H )  /    1/2  B H     the 1/2   the B's and the H's   'cancel out'

6/10 * 6/10 = 36/100 = 9/25

Area for a square (or rectangle) is   L x W       Now scale by 6      (6L x 6W ) /  (L x W)  = 36 times bigger !

Mar 3, 2018

#1
+18106
+3

Find two similar sides and express as a ratio:

WX/RS = 20/24 = 5/6

Let  B  and  H   be the dimensions of   DEF

then  ABC  is   6/10  B     and    6/10  H

Area = 1/2 BH  for a triangle  so the ratios of the areas would be

(1/2  6/10  B  6/10 H )  /    1/2  B H     the 1/2   the B's and the H's   'cancel out'

6/10 * 6/10 = 36/100 = 9/25

Area for a square (or rectangle) is   L x W       Now scale by 6      (6L x 6W ) /  (L x W)  = 36 times bigger !

ElectricPavlov Mar 3, 2018