The distance between two points on the circumference of a circle is called the arc. If the arc length subtends an angle θ to the center of the circle and the circle has a radius r, then the length of the arc is calculated by the formula;
θ/360 × 2πr.
Answer:
ages of the twins are 11 years
Step-by-step explanation:
let the age of the twins each be X
Age of the older sister = X+9
This current year;
(X)(X)(X+9) - (X+X+X+9) = 2378
X³+9X² - 3X-9 = 2378
Solving the polynomial
X = 11
Hence ages of the twins are 11 years
Answer:
Linear.
Cubic.
Step-by-step explanation:
Answer:
2520 stones which will cost £6300
Step-by-step explanation:
First find area of path:
630 x 120 = 75600 cm²
then find how many stones will be needed:
75600/30 = 2520
then find out the total cost:
2520 x 2.5 = £6300
Hope this helps!
