Answer:
105 cm^3.
Step-by-step explanation:
Its volume = area of triangular side * length
= 1/2 * 5 * 7 * 6
= 105 cm^3.
Answer:
hexagonal pyramid
Step-by-step explanation:
i don't know exactly
The answer is < because 7.1983 * 10^1 =71.983
Let the number of rows be x
rows = x
seats in each row = x + 20
total seats = 1344
x (x + 20) = 1344
x^2 + 20x - 1344 = 0
(x + 48)(x - 28) = 0
x = -48 (rejected, answer cannot be negative) or x = 28
Therefore,
x = 28
x + 20 = 48
Check:
Row = 28
Numbers of seat per row = 28 + 20 = 48
28 x 48 = 1344 (Correct)
Ans:There are 48 seats per row
Answer:
b)480 cm^2
Step-by-step explanation:
perimeter=(16+12+20) cm
=48 cm
lateral surface area= perimeter × height
=48×10 =480 cm^2
