15 inches of ribbon<span> for </span><span>each</span>
9514 1404 393
Answer:
51.3 km²
Step-by-step explanation:
The area formula is ...
A = 1/2r²θ . . . . where θ is the central angle in radians
A = 1/2(7 km)²(2π/3) = 49π/3 km² ≈ 51.3 km²
The answer is 4 i think? because since -70 is negative and you're adding 13 but you're actually subtracting so ig 4 (sorry if my reasoning doesn't make sense)
Area of base = 1/2 x 4 x 3.5 = 7 m²
Perimeter of the base = 4 + 4 + 4 = 12 m
Surface area = 7 + 7 + 12 x 11 = 146 m²
Answer: 146 m²
