The length and width of a rectangle are consecutive even integers. The perimeter is 84 meters. Find the length and width.
1 answer:
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The surface area of the square pyramid is 360 in²
Explanation:
Given that the side length is 10 inches.
The height of the pyramid is 12 inches.
We need to determine the surface area of the pyramid.
The surface area of the pyramid is given by
Where s is the side length and l is the slant height.
The slant height can be determined using the formula,
where h = 12 and
Substituting these values in the formula, we get,
Thus, the slant height is
Now, we shall find the surface area of the pyramid.
Substituting and
in the formula
, we get,
Thus, the surface area of the square pyramid is 360 in²
Check the picture below.
∡a has a vertical angle sibling of 40°, and vertical angles are always congruent.
∡b is the 3rd angle in a triangle, the other two are 40° and 90°, recall all interior angles in a triangle add up to 180°.
∡c is a linear angle, namely an angle on the same flat-line as another, and linear angles always add up to 180°.
