The surface area of the square pyramid if the length of the sides of the base are 10 cm, and the slant height is 15 cm is 416.2 cm²
<h3>Surface area</h3>
Surface area of the square pyramid
= a² + 2a√a²/4 + h²
where,
- a = sides of base = 10 cm
- h = slant height = 15 cm
Surface area of the square pyramid
= a² + 2a√a²/4 + h²
= 10² + 2(10)√10²/4 + 15²
= 100 + 20√100/4 + 225
= 100 + 20√25 + 225
= 100 + 20√250
= 100 + 20(15.81)
= 100 + 316.2
= 416.2 cm²
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Answer:
C
Step-by-step explanation:
Hopefully
Answer:
Example 2: Mixed numbers. Before multiplying, we need to write the mixed ..... Practice: Multiplying fractions with visuals · Multiplying 2 fractions: 5/6 x 2/3.
Step-by-step explanation:
Answer:
What about it?
Idk what You are trying to ask.
Answer:
Option C - 52 mph
Step-by-step explanation:
I've attached an image to depict the diagram of movement of both cars.
dy/dt = 50 mph
dx/dt = 20 mph
From the attached image, using pythagoras theorem, we have;
x² + y² = s²
Differentiating with respect to to using implicit differentiation with power rule, we have;
2x(dx/dt) + 2y(dy/dt) = 2s(ds/dt) - - (eq1)
Now, let's find s by pythagoras theorem.
s² = 0.375² + 0.5²
s² = 0.390625
s = √0.390625
s = 0.625
Plugging in all the relevant values into eq 1,we have;
2×0.375(20) + 2×0.5(50) = 2×0.625(ds/dt)
15 + 50 = 1.25(ds/dt)
65 = 1.25(ds/dt)
ds/dt = 65/1.25
ds/dt = 52 mph