8 times the sum of a number and 5 is 3 years the variable Y for the unknown number
1 answer:
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Answer:
39.30
Step-by-step explanation:
The area of the top surface of the wedge is the same as the area of a sector.
Area of a sector = (θ/)
where: θ is the central angle, and r is the radius.
Given that: central angle = , radius = 10 centimetre.
Area of the top surface = Area of a sector = (θ/)
= x
x
= x
x 100
= 39.2857
= 39.30
The area of the top surface of the wedge is 39.30 .