Answer:
Option (a) 55
Step-by-step explanation:
No. of boxes=1²+2²+3²+4²+5²=55
Answer:
This is a circle with centre (6,-7) and radius 4.
Step-by-step explanation:
The equation of a circle has the following format:
In which r is the radius(half the diameter) and the centre is the point
In this question:
So
The radius is the positive value.
So this is a circle with centre (6,-7) and radius 4.
Y int, is when x=0,
y=0
(0,0)
Since C = 2rπ
if the C of earth = 25000 miles
then the r = C ÷ (2π)
= 25,000 miles ÷ 2π
= 12500 ÷ π
≈ 3978.87358 miles
Since radius is a measure of the distance from the center to any point on the circle then that distance would be about 3978.8736 miles<span />