Problema Solution
the slant height of right pyramid is 9.00 in the base is 7.00 in square find the area of the entire surface
Answer provided by our tutors
Let
s = 9 in the slant height
b = the length of the base, b>0
B = 7 in^2 the area of the base
A = the entire area
A = B + 4*(1/2)(bs)
A = B + 2bs
We need to find b.
Since B = b^2 we have:
b^2 = 7
b = √7
Now we plug the value for b:
A = 7 + 2*9√7
A = 54.62 in^2
The area of the entire surface is 54.62 in^2.