Answer:
18 m^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1+b2)h where b1 and b2 are the lengths of the bases and h is the height
A = 1/2 ( 5 + (6+1)) * 3
A = 1/2 ( 5+7)*3
= 1/2 (12)3
= 18
Answer:
243
Step-by-step explanation:
-5(1-4)^2+18
(-5+20)^2+18
225+18
=243
Answer:
18√2
Step-by-step explanation:
The smaller triangle resulting from the division is similar to the original. Since its area is a factor of 1/2 relative to the larger triangle area, its linear dimensions must be a factor of √(1/2) = (√2)/2 times those of the larger triangle. Then the parallel base will have a length of ...
36·(√2)/2 = 18√2
9514 1404 393
Answer:
a) BE = 5; DE = 6; EF = 4
b) ∠EFC ≅ ∠DA.F ≅ ∠BDE or <em>b = e = f = i</em>
Step-by-step explanation:
Each short segment is the same length as the marked one it is parallel to.
E is the midpoint of BC, so BE = EC = 5.
ADEF is a parallelogram, so DE = A.F = 6.
D is the midpoint of AB, so AD = DB = 4. ADEF is a parallelogram, so ...
EF = AD = 4
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As we have noted, AB║EF and DE║A.F, so corresponding angles and alternate interior angles are congruent. <em>b = e = f = i</em>