Answer:
320 ft²
Step-by-step explanation:
The area (A) of a trapezoid is calculated as
A = h (a + b)
where h is the perpendicular height and a, b are the parallel bases
Here h = 16, a = 18 and b = 12 , thus
A = × 16 × (18 + 12) = 8 × 40 = 320 ft²
12/7
Make 5 1/7 into improper fraction
(5×7)+1= 36/7
Then make 3 as a fraction
3/1
Divide
36÷3
7÷1
14 miles per hour
Convert 270 minutes to hours first= 4.5hrs
Then divide 63 by 4.5= 14
5:9
; k=25
7 less than 25 (or K) is 18.
