Question

please help!!!!!
2. What is the surface area of the pyramid?http://www.intervisualtechnology.us/data/1/9045/apply_11_3.png

Answer 1

1. Perimeter = 4s
Perimeter = 4(5)
Perimeter=20
L.A=1/2 p l
L.A=1/2(20)(6)
L.A=120 divide by ½
L.A = 60


2. S.A = L.A +B
S.A = 1/2pl +1/2p
S.A = ½(20)(6) +1/2(20)
S.A = ½(120)+ ½(20)
S.A = 60+10 = 70

i got 70 but my teacher said it is wrong. can someone tell me how to fix it.

Answer 2

@jim_thompson5910 @TheSmartOne @mathmate please help will medal u

Answer 3

Surface area is basically finding the area of each face and adding it up.

There are 5 bases. One base is a square with side 5 m. The other four sides are triangles and have a base of 5 m and a height of 6 m.

Remember the formula for finding area of a triangle is 1/2 * base * height and for a square it is side * side

Answer 4

@sweetheart you calculated the lateral sides correctly but you made an error calculating the area of the base

Answer 5

as @TheSmartOne states: `One base is a square with side 5 m`

area of square = (length of side)*(length of side)

Answer 6

5*5 = 25

Answer 7

yes that's the area of the base

Answer 8

1/2 (25) would u do that or not

Answer 9

lateral surface area = 60 square meters
area of base = 25 square meters

add up the values to get the total surface area

Answer 10

2. S.A = L.A +B
S.A = ½(20)(6) +25
S.A = ½(120)+ 25
S.A = 60+25= 85

Answer 11

yep 85 is your final answer

Answer 12

thank you

Answer 13

no problem