Answer:
<u>The area of ABCD = 12² = 12 * 12 = 144 m²</u>
Step-by-step explanation:
Given that ABCD in the model, is a square.
All the edges of the pyramid in the model have length 12m.
So, the length of one side of the square = 12 m
The area of the square = (side length)²
∴ the area of ABCD = 12² = 12 * 12 = 144 m²
Answer:
31.78
Step-by-step explanation:
idk if im right, but if you 5.25% of 30 is 1.78.
so i just added 1.78 and 30 and got 31.78
<span>First find 2/5 of 25.
This can be done by multiplying the two numbers.
2/5 </span>× 25 = 10
10 is the distance from E to F.
So now that you have EF and know the overall length of EG (25), you can easily find FG.
25 - 10 = 15
The answer is:
<span>d. 15
</span>
The height of the lighthouse is 44 feet.
<u>Step-by-step explanation:</u>
You are given more information than you need.
Use the right triangle concept,
A yacht is anchored 90 feet offshore
from the base of a lighthouse.
- Base = 90 feet
- Height = h feet
The angle of elevation from the boat to the top of the lighthouse is 26 degrees.
<u>Using one side length and the angle only: </u>
The trigonometric formula is given as,
tan = height / base
tan[26º] = h ⁄ 90
h = 90 × tan[26º]
h = 43.9 ft
h = 44 feet
Therefore, the height of the lighthouse is 44 feet.
Answer:
Step-by-step explanation:
Amount paid for first 100 watches = (65% of 80) *100
Amount paid for next 50 watches = (55% of 80) * 50
Remaining watches = 280 -(100+ 55)
= 280 - 155 = 125
Amount paid for 125 watches = (45% of 80) *125
Amount received by the watch maker = 5200 + 2200 + 4500
= £ 11900
