Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer:
To find the area of a trapezoid, multiply the sum of the bases (the parallel sides) by the height (the perpendicular distance between the bases), and then divide by 2.
Step-by-step explanation:
:) Hope this helps you with what you're working on!
2(x4) = 35 - (7-4x)
+4x
2(x8)= 28
/2 /2
8x = 14
Answer:
6 millimeters
Step-by-step explanation:
A = L × W
A ÷ L = W
42 ÷ 7 = 6
Answer:
2.3283064
Step-by-step explanation: