Answer:
Surface Area = 85.75 ft²
Step-by-step explanation:
Surface area of pyramid = ½(Perimeter of triangular base * slant height of pyramid) + Area of triangular base
Perimeter of triangular base = sum of all sides of the triangular base = 5+5+5 = 15 ft
Slant height of pyramid = 10 ft
Area of triangular base = ½*base of triangle*height of triangle = ½*5*4.3 = 10.75 ft²
Plug in the above values:
Surface Area = ½(15*10) + 10.75
= (15*5) + 10.75
= 75 + 10.75
Surface Area = 85.75 ft²
Answer:
Therefore, x > -4 .
Step-by-step explanation:
First, you have to collect like terms :
5x + x - 3x > -12
3x > -12
Next, you have to divide both sides by 3 in order to eliminate 3 on the left side :
3x > -12
3x ÷ 3 > - 12 ÷ 3
x > -4
Answer:
i did it and i think b should be right
Answer:
1728ft³
Step-by-step explanation:
Split the shape into the two rectangular prism that make it up
Volume of a rectangular prism=length*width*height
Small prism=10*12*3=360ft³
Big prism=19*12*6=1368ft³
Total=360ft³+1368ft³=1728ft³
Answer:
28.3
Step-by-step explanation:
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