7 45° x y y= √ help needed ?
1 answer:
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Answer:
Step-by-step explanation:
A. The front elevation of the pyramid in the direction of the arrow is herewith attached to this answer.
B. Base of the pyramid is a square of side 12 cm.
The height of the pyramid is 8 cm.
Slant height, XT, is 10 cm.
The total surface area of the pyramid can be determined by adding the surface areas that make up the shape.
Area of the triangular face = × base × slant height
= × 12 × 10
= 60
Area of the square base = length × length
= 12 × 12
= 144
Total surface area of the pyramid = area of the base + 4 (area of the triangular face)
= 144 + 4(60)
= 144 + 240
= 384
Therefore, total surface area of the pyramid is 384 .
<em>π</em> ≈ 3.14 > 2, so the second piece is the relevant one:
Answer:
A = 760.27
Step-by-step explanation:
The shape presented is a semicircle, and the formula for this is:
A =
The "," is the radius, which is half of the diameter, in this case is 44, so all you need to do is divide 44 by 2 = 22, then plug this in:
A =
A =
A =
A = 760.27