The 2nd one or either the last one, I suggest the last one hope this helps!!
Let x be the length of the edge of the original cube. When increased to twice its original size it becomes 2 x which gives a volume of
2x × 2x × 2x = 8x³
The volume is known. Hence
8x³ = 64,000
x³ = 8,000 which gives x = 20
<span>The area of one face of the original (before the increase) is given by x2</span>
x² = 20² = 400 square centimeters
The answer is D because if you continue the pattern the bottom number would have to be 8 and the top would have to be 7!!
Answer:
Rs. 333
Step-by-step explanation:
Area of the surface of the cuboidal box to be painted = surface area of the cuboidal box - area of the base
✔️Surface area of the cuboidal box = 2(L*W + W*H + L*H)
L = 6 cm
W = 4 cm
H = 2.5 cm
Surface area of the cuboidal box = 2(6*4 + 4*2.5 + 6*2.5) = 2(24 + 10 + 15) = 2(49)
Surface area of cuboidal box = 98 cm²
✔️Area of base = L*W
= 6*4 = 24 cm²
Area of the cuboidal box to be painted = 98 - 24 = 74 cm²
✔️Cost of painting 74 cm² at Rs. 4.50 per cm² = 74 × 4.50 = Rs. 333
Answer:
4656.46km
Step-by-step explanation:
Given that:
Abuja (Nigeria) = (9°N,7°E)
Bonn (Germany) = (51°N,7°E)
Longitudinal difference = 51 - 9 = 42°
Radius of the earth (R) = 6400
Distance = θ/360 * 2πr
r = Rcos7° = 6400 * cos7 = 6352.2953
Hence,
Distance = (42/360) * 2 * 3.142 * 6352.2953
Distance = 0.1166666 * 2 * 3.142 * 6352.2953
Distance = 4656.4757 km
