Answer:
10 x 4
Step-by-step explanation:
what factors are there for 40?
1, 2, 5, 8, 10, 20, 40
A rectangle has 2 equal long sides and 2 equal short sides. The area is the short times the long.
10 plus 10 and 4 plus 4 equals 28. 4 x 10 equals 40.
I hope this helps you
Area=pi.r^2
Area =3,14.5^2
Area =78,5
Answer:
10
Step-by-step explanation:
The number of tiles in the design is 1 + 2 + 3 + ...
We can model this as an arithmetic series, where the first term is 1 and the common difference is 1. The sum of the first n terms of an arithmetic series is:
S = n/2 (2a₁ + d (n − 1))
Given that a₁ = 1 and d = 1:
S = n/2 (2(1) + n − 1)
S = n/2 (n + 1)
Since S ≤ 60:
n/2 (n + 1) ≤ 60
n (n + 1) ≤ 120
n must be an integer, so from trial and error:
n ≤ 10
Mr. Tong should use 10 tiles in the final row to use the most tiles possible.
Answer:
first one is 65 second one 75 third one 25
Step-by-step explanation:
