We are to solve the total area of the pyramid and this can be done through area addition. We first determine the area of the base using the Heron's formula.
A = √(s)(s - a)(s - b)(s - c)
where s is the semi-perimeter
s = (a + b + c) / 2
Substituting for the base,
s = (12 + 12 + 12)/ 2 = 18
A = (√(18)(18 - 12)(18 - 12)(18 - 12) = 62.35
Then, we note that the faces are just the same, so one of these will have an area of,
s = (10 + 10 + 12) / 2 = 16
A = √(16)(16 - 12)(16 - 10)(16 - 10) = 48
Multiplying this by 3 (because there are 3 faces with these dimensions, we get 144. Finally, adding the area of the base,
total area = 144 + 62.35 = 206.35
Answer:
It will take 1344 pounds of sand to fill the sand box.
Step-by-step explanation:
I'm sorry If I got this wrong, have a great day!
C is the answer bc its (5)^2-10(5)+25 so then it is 25-50+25 which = 0
Answer:
about 9 passengers will not keep theire reservation
Step-by-step explanation:
given that an airline finds that about 8 percent of the time, a person who makes an advance reservation does not keep the reservation
Capacity of the airline per trip = 105 only
But company schedules = 113 people with advance reservations
Since 8% do not turn up
out of 113 passengers who reserved in advance we can say
that 8% of 113 passengers will not keep their reservation
Based on this information, number of the scheduled people will not keep their reservation
=
Since persons cannot be in decimals we can expect about 9 passengers will not keep theire reservation
Answer:
The triangles are indeed congruent I know this because if you look at the lines on each side of the triangle they're the same. Another way I know it because They're both right angles. So, if you put them side by side they would be identical.