Answer:
82.8 in²
Step-by-step explanation:
The surface area a triangular based pyramid :
Base area + 1/2(perimeter * slant height)
Base = 8 inches ; Slant height = 4.6 inches ; altitude of base measure = 6.9 inches
Base area of triangle :
1/2 * base * height
1/2 * 8 * 6.9
4 * 6.9
Base area = 27.6 in²
The perimeter, P = sum of sides ; (s1 + s2 + s3
P = 8 + 8 + 8 = 24 in
Hence,
Surface area = 27.6 in² + 1/2(24*4.6)
Surface area = 27.6 in² + (12 * 4.6) in²
Surface area = (27.6 + 55.2)
Surface area = 82.8 in²
Isn’t it choice B …….…………
Answer:
825.5 miles of coastline
Step-by-step explanation:
The United States has 12383 miles of coastline.
0.8% of the coastline is in Georgia
Total number of coastline in Georgia will be
0.8% /100% x 12383
0.0667 x 12383
825.5
So there are 825.5 miles of coastline Georgia
Answer:
- 3.21
Step-by-step explanation: