Find the surface area of a square pyramid with base length of 16 cm and a slant height of 20 cm
1 answer:
Answer:
The surface area of the square pyramid is 1,040
Step-by-step explanation:
To find the surface area of the square pyramid, we make use of the mathematical formula.
Mathematically, the formula for calculating the surface area A of a square pyramid is :
SA = where s is the slant height and l is the base length
From the question, we can see that the slant height is 20cm and the base length is 16cm. We plug these into the equation above;
SA = = 400 + 640 = 1,040
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Answer:
k = 11
Step-by-step explanation:
Given the points are collinear then the slopes between consecutive points are equal.
Using the slope formula
m =
with (x₁, y₁ ) = (5, 1) and (x₂, y₂ ) = (1, - 1)
m = =
=
Repeat with another 2 points and equate to
with (x₁, y₁ ) = (1, - 1) and (x₂, y₂ ) = (k, 4)
m = , then
=
( cross- multiply )
k - 1 = 10 ( add 1 to both sides )
k = 11