Answer:
60 feet
Step-by-step explanation:
Perimeter is the sum of the four sides of a rectangle
the formula for the perimeter of a rectangle = 2 x (length + breadth)
2 x (10 + 20)
2 x (30)
= 60 feet
Alternatively, you can add the sides together : 10 + 10 + 20 + 20 = 60 feet
Three ways are: 1/2, 0.5, 50%
D
10(3)+2(10)(4)+2(3)(4)=30+80+24
=134
11x^2-8x-14
(2x^2- 8x– 6)+(9x^2-8) = 11x^2-8x-14