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
Answer:
(i) Breadth = 14 cm
(ii) Perimeter = 176 cm
Step-by-step explanation:
Given,
- Area of a rectangle =
cm²
- Length =
cm
(i) Breadth = ?
We know that, Area of a rectangle = length × breadth.
Then,

(ii) Perimeter of a rectangle = 2 (length + breadth)
Then,


Answer:
-6
Step-by-step explanation:
Let x = number of miles, cost per mile = 93 cents = $0.93
Cost = 20.95 + 0.93*x
200.44 = 20.95 + 0.93x
0.93x + 20.95 = 200.44
0.93x = 200.44 - 20.95
0.93x = 179.49
x = 179.49/0.93
x = 193
He drove 193 miles.