Answer:
30 units^2
Step-by-step explanation:
The area of a trapezoid is
A = 1/2 (b1+b2)h
The scale is 2 units per line
b1 = 2 units
b2 = 8 units
h = 6 units
A = 1/2 ( 2+8) * 6
= 1/2 (10)6 = 30 units^2
we are given
system of equations
First equation is

Second equation is

now, we can find augmented matrix

now, we can change it into reduced row echelon form
step-1: multiply the 1st row by 1/3

step-2:add -3 times the 1st row to the 2nd row

step-3:multiply the 2nd row by 1/4

step-4: add 2/3 times the 2nd row to the 1st row

so, we get

Answer is (5,-8)
Answer:
1400π m³
Step-by-step explanation:
V = BH
V = 10² * π * 14 = 1400π m³