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frutty [35]
2 years ago
7

the number of the students of a school was 640 last year and it is 800 by how many percent is the number increased​

Mathematics
2 answers:
yuradex [85]2 years ago
8 0

Answer:

The number of students would have increased by 25%.

Step-by-step explanation:

Liono4ka [1.6K]2 years ago
6 0

Answer:

25% more

Step-by-step explanation:

640  100

800   x

---------------

cross-multiplication = 100*800 = 80000/640 = 125

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kow [346]

Answer:

  1. 150π ft²
  2. 10π ft.

Step-by-step explanation:

Area of the sector :

Area (sector) = \pi r^{2} \times \frac{\theta}{360^{o}}

Finding the area given r = 30 ft. and θ = 60° :

⇒ Area = π × (30)² × 60/360

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⇒ Area = 150π ft²

===========================================================

Length of the arc :

Length (arc) =2 \pi r} \times \frac{\theta}{360^{o}}

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⇒ Arc Length = 2 × π × 30 × 60/360

⇒ Arc Length = 60/6 × π

⇒ Arc Length = 10π ft.

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Step-by-step explanation:

I used my calculator for this,  

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3 years ago
Carl is shipping a cardboard box that is a rectangular prism. The net of the box is 10 in 6 in 4in. What is the area of the box?
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