Answer:
115 in²
Step-by-step explanation:
SA = Area of triangular surfaces + area of the square base
SA= 2bh + b²
SA = 2(5)(9)+5²
SA = 90+25
SA = 115
You need to divide 30 miles by 5 hours,so your average speed is going to be 6 miles an hour
Answer:
40
Step-by-step explanation:
The area of a triangle is base * height * 1/2. The base is 8 and the height is 10, making the area = 8 * 10/2 = 40
Let width = x then
2x+ 2(x + 2) = 80
4x + 4 = 80
4x = 76
x = 19
so the width is 19 and the length is 21 answer
