Trinhphuongtran
12.10.2019 •
Mathematics
Atriangular pyramid has lateral faces with bases of 6 meters and height of 9 meters. the area of the base of the pyramid 15.6 meters . what is the surface area of the pyramid?
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Ответ:
First, area of an triangle is 1/2 length times width
So you do 1/2 6*9= 1/2 54= 27 The area of the three triangles are 27
27 times 3 is 81
81 plus the base of 15.6 is 96.6
The surface area is 96.6 meters squared
Ответ:
Prime numbes
Step-by-step explanation:
Numbers whose only factors are 1 and itself are called prime numbers.
Such numbers have only two factors.
Examples are: 2, 3, 5, 7 ,9... etc.