The number of eggs in the refrigerator e decreased by 2 equals 18. What’s the equation?
2 answers:
You might be interested in
Answer:
Rs 93.75
Step-by-step explanation:
Solution:
A man starts from his house with some money to visit four temples.
<u>1. As soon as he enters temple 1 his money gets doubled. </u>
Let he had money at first =
After enter the 1st temple his money =
He donated = Rs 100
Money left after donation at 1st temple =
<u>2. At temple 2 again his money is doubled and he donates Rs 100</u>
He had at 2nd temple =
Donated = Rs 100
Money left after donation at 2nd temple =
<u>3. His money is doubled again at temple 3 and he donates Rs 100.</u>
He had at 3rd temple =
Donated = Rs 100
Money left after donation at 3rd temple =
<u>4. At temple 4 again his money gets doubled. He donates 100 rs. again and returns home empty handed.</u>
He had at 4th temple =
Donated = Rs 100
Money left after donation at 4th temple =
<u>As he returned empty hand or with zero money, equation will be:-</u>
Thus, he had Rs 93.75 when he started from his house.
*see attachment for the diagram
Answer:
A. 178 units²
Step-by-step explanation:
Surface area of the figure = (surface area of the square pyramid + surface area of the square prism) - 2(base area of the square pyramid)
✔️Surface area of the square pyramid = s² + 2*s*l
Where,
s = side length of square base (w) = 6 units
l = slant height = ?
Use Pythagorean theorem to find l
l = √((w/2)² + y²)
l = √((6/2)² + 5²) = √(9 + 25)
l = √34
l ≈ 5.8 units
Surface area of the square pyramid = 6² + 2*6*5.8 = 105.6 units²
✔️Surface area of square prism:
SA = 2a² + 4ah
Where,
a = w = 6 units
h = x = 3 units
Substitute
SA = 2(6²) + 4*6*3
= 72 + 72
= 144 units²
✔️base area of the square pyramid = s²
s = w
Base area = 6²
Base area = 36 units²
✅Surface area of the figure = (surface area of the square pyramid + surface area of the square prism) - 2(base area of the square pyramid)
Surface area of the figure = (105.6 + 144) - 2(36)
= 249.6 - 72
= 177.6
≈ 178 units²
