The area of this triangle can be solved using the Heron's Formula which is expressed as:
<span>
Area</span> = √p(p −a )(p −b )(p −c <span>)
</span><span>
where p is half of perimeter of the triangle and a,b,c are the side lengths.</span><span>
p = (25 + 25 + 48) / 2
</span><span>p = 49
</span><span>
Area = √49(49</span> <span>−25)(49−25)(49−48)
</span>Area = 168<span>
</span>
1. false
2. true
3. true
4. false
Answer: W and V; X and Y
hope this helps let me know if it's wrong.
Let the time that you caught up with your friend be t, then
8.5 - 3.4t = 8 - 3t
3.4t - 3t = 8.5 - 8
0.4t = 0.5
t = 0.5/0.4 = 1.25
therefore, you will catch up with your friend after 1.25 hours.
b.) time it will take you to cross the finnish line = 8.5/3.4 = 2.5 hours
After 2.5 hours, distance covered by your friend = 3 x 2.5 = 7.5 miles
Therefore, when you cross the finish line, you are 8 - 7.5 = 0.5 miles ahead of your friend.
In triangle ABC and DEF
AC =DF, [ given ]
AB =DE, [ given ]
angle A = angle D
by SAS
ABC congruent to triangle DFE
so
BC = EF, [ CPCTC]
hence proved