Please look up and apply Heron's Formula. Start by calculating s, where
a + b + c
s = -------------------
2
Then calculate A:
A = sqrt[ s(s-a)(s-b)(s-c) ]
Answer:
7.8cm
Step-by-step explanation:
1cm rep10km
Xcm rep78km
Cross multiply
10xcm=78*1
Xcm=78/10
X= 7.8cm
1/20 = 0.05, which leads to 5%.
Answer : rotation of 90 counterclockwise° about the origin and then translation 2 unit up.
Explanation : In Δ RST, it is an right triangle with ∠R being the right angle. When we draw this triangle we see that long side of the Δ is close to the origin and the short one is below ∠R.
Now, Δ R'S'T', is also a right triangle. But he long side is parallel to the y axis and ∠S' is now above ∠R' instead of ∠S being to right of ∠R in the original Δ.
which clearly shows that the Δ is rotated at 90 degrees counter clockwise.
On drawing a new Δ; The point R" is at (1,-4), S" at (1,-1), and T" at (2,-4).
All three of these points are 2 units below the points R' S' T'.
We need to translate the triangle 2 units higher.
Therefore, the answer is to perform rotation of 90 counterclockwise° about the origin and then translation 2 unit up.
Answer:
cant get an exact answer this is the best ur gonna get 3.675e+17
Step-by-step explanation:
