Answer: Chris reached Boston at 10:24 a.m.
Explanation:
Since we have given that
Speed at which Chris ran from Newton to Boston = 15 km/h
Speed at which Goffy ran from Newton to Boston = 12 km/h
Time at which both started = 10:00 a.m.
Time at which Goffy reached Boston = 10:30 a.m.
That means Goffy takes half an hour to reach Boston,
so, Distance between Newton and Boston is given by
![Speed \times Time\\\\=12\times \frac{1}{2}=6 \ km](https://tex.z-dn.net/?f=Speed%20%5Ctimes%20Time%5C%5C%5C%5C%3D12%5Ctimes%20%5Cfrac%7B1%7D%7B2%7D%3D6%20%5C%20km)
So, Time taken by Chris to ran from Newton and Boston is given by
![Time=\frac{Distance}{Speed}=\frac{6}{15}=\frac{2}{5}\times 60\ minutes=24\ minutes\\](https://tex.z-dn.net/?f=Time%3D%5Cfrac%7BDistance%7D%7BSpeed%7D%3D%5Cfrac%7B6%7D%7B15%7D%3D%5Cfrac%7B2%7D%7B5%7D%5Ctimes%2060%5C%20minutes%3D24%5C%20minutes%5C%5C)
So, Chris reached Boston at 10:24 a.m.
Answer:
Area = πr²
Circumference = 2πr
Step-by-step explanation:
When given the radius r ,
Area of a circle A = πr²
Circumference of the circle C = 2πr
When given diameter d,
Area of a circle A = πd²/4
Circumference of a circle = πd
To find the radius r and d from area A,
r = sqrt(A/π)
d = sqrt(4A/π)
To find the radius r and diameter d from a given circumference C,
r = C/(2π)
d = C/π
Where d = 2r
Answer:
15n=5
Step-by-step explanation:
15n=5
There are four triangles and one square, the areas of which can be added together to form the total surface area.
Area of triangle = 0.5bh
= 0.5*16*15
= 120 cm^2
Since there are four triangles, the total area for them would be 120*4 = 480 cm^2
Area of square = 16^2 = 256
Total surface area = 256 + 480 = 736 cm^2
No it doesn’t because 16+16=32, +50 cents = 32.50