Answer: the exact perimeter of the figure is 53.68 cm
Step-by-step explanation:
The angle formed by the shaded sector is
360 - 90 = 270 degrees
We would determine the length of the arc formed by the shaded portion by applying the formula for length of arc which is expressed as
Length of arc = θ/360 × 2πr
Where
θ represents the central angle.
r represents the radius of the circle.
π is a constant whose value is 3.14
From the information given,
Radius, r = 8 cm
θ = 270 degrees
Length of arc = 270/360 × 2 × 3.14 × 8
= 37.68 cm
Perimeter of the figure is
Length of arc + radius + radius
It becomes
37.68 + 8 + 8 = 53.68 cm
Answer:
The answer is incorrect; the plus sign should be a minus sign (apex)
Step-by-step explanation:
4(square root of 0.0081)
= 4(square root of 81x10^-4
= 4(9x10^-2)
= 36x10^-2
= 0.36
Because you use money to purchase Groceries, Clothes, and etc.
You will (maybe) get Change, Taxes, Discounts
You use the following mathematical skills to go shopping :
Percent increase/ decrease
Subtraction and addition
Finding the value of x / Variables
