Area of the pentagon: 342 cm2
Step-by-step explanation:
The figure of the pentagon is missing: find it in attachment.
The area of the pentagon can be seen as the area of 5 equal triangles, each of them having a base equal to the length of the side of the pentagon,
L = 14.1 cm
and the height of each triangle can be found by using Pythagorean's theorem:
The area of each of the 5 triangles is
Therefore, the area of the pentagon is 5 times this area:
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I plugged it in to a truncated square pyramid calculator and got v=76
the formula for this shape is V=1/3(A squared+AB+B squared)H.
Answer:
1,448.4 mm.
Step-by-step explanation:
Volume is the length, width, and height multiplied together.
14.2 mm x 12 mm x 8.5 mm = 1,448.4 mm^2.
Answer:
55
Step-by-step explanation:
The total is 2(2x+15) +2x=360.
4x+30+2x=360
6x+30=360
6x=330
x=55