Answer:
A=103.13cm
Step-by-step explanation:
Formula: A= c^2/4π (C being the circumference and ^2 means it's squared)
Plug in what you know: 36^2/4π
1296/4π= 103.13
100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150,...
Let the second car meets the first car after n hours.
Second car starts with 8km/h, After succeeding hours his speed increases by 0.5 km.
So, Distance travelled by second car = 8 + 8.5 + 9
..... 8+(n-1) 0.5.....(1)
eqn. (1) sum of n terms Of A.P with first term 8
and common difference 0.5.
Sum of all the terms in equation 1 is also equals to the distance travelled by the first car for n hours, i.e. 10n km .
Now, we have (n/2) {16+(n-1) 0.5} = 10n........(2)
From equation (2) we get, n= 9
Hence, Both the cars will meet after 9 hours.
Hope it helps!
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Answer:
Step-by-step explanation
1. try to figure out the number for each (n) on a piece of scratch paper.
