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Sagot :
Answer:
15
Step-by-step explanation:
How to calculate a triangle :
(b*h)/2
(4*5)/2=10!
A similar triangle should have a ratio of base and height 4:5
4*5=20/2=10 (Not 90)
8*10=80/2=40(Not 90)
12*15=180/2=90!
So 12 is the base and 15 is the height. :)
Answer:
10 = (1/2)4h → 20 = 4h → h = 5 So the base of the first triange is 4m and the height is 5m Note that the area of our new triangle is 9 times the area of the old then each dimension will be sqrt(9) = 3 times as much as the old so The base of the new triangle will be 4*3 = 12m And the height will be 5 * 3 = 15m Proof: A = (1/2)(12)(15) = (1/2) * 180 = 90 m^2
Step-by-step explanation:
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