rectangle 1: 6 units by 1 unit
rectangle 2: 5 units by 2 units
rectangle 3: 4 units by 3 units
Answer:
$12
Step-by-step explanation:
The best way to do this is with a simple ratio. If you pay $3 for one meter, then for 4 meters, you’d pay $12. You BOUGHT 4 times more cord, which means you’d PAY 4 times more. Thus, 3 x 4 = 12!
Or with ratios:
1 meter : $3
multiplying both sides by 4
4 meters : $12
Answer:
B.
D. 
Step-by-step explanation:
By exterior angle theorem:


Answer:
It's 21 because if you times Length×width= the area