Question

Find the surface area of the solid. Round to the nearest square foot.


A.



147 ft2


B.



245 ft2


C.



196 ft2


D.



98 ft2

Answer 1

do you know what's the Area of a Triangle?

Answer 2

not really.. b*h

Answer 3

1/2 bh

Answer 4

so the pyramid has 4 TRIANGULAR LATERAL faces, you're given the height of each and base as well
so find their area and SUM them up

the bottom is a 7x7 square, find that area and add it to the triangles' area

and that'd be the total surface area of the pyramid

Answer 5

k, so it'll be 7*7*1/2 then that answer times 7

Answer 6

right?

Answer 7

@jdoe0001

Answer 8

well, \(\bf \textit{area of a triangle}=\cfrac{1}{2}bh\implies \cfrac{1}{2}\cdot (7\cdot 7)\qquad \textit{you have 4 triangles, so}
\\ \quad \\
\left(\cfrac{1}{2}\cdot (7\cdot 7)\right)\cdot 4
\\ \quad \\
\textit{area of the square bottom}=7\cdot 7\)

Answer 9

THANK YOU!!!!!!!!

Answer 10

yw