Answer: 28
Step-by-step explanation: you have to add 21 + 7 because your counting up from -7 to 21
Answer:
;;6
Step-by-step explanation:
56 5
Answer:
45 square meters
Step-by-step explanation:
we know that
The area of trapezoid is equal to

where
b1 and b2 are the parallel bases
h is the height of trapezoid (perpendicular distance between the parallel bases)
we have

substitute


Answer: 4
Step-by-step explanation: