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Answer:
D) 120
Step-by-step explanation:
720- 135-115-110-140-100=120
Answer: it's C Sophie used the wrong height for the pyramid
It's Right cause I took the test.
Step-by-step explanation:
Answer:
A. 9
B. 9.6
C. 38.4
D. 47.4
Step-by-step explanation:
A. Area of the base of the pyramid = length x length
= 3 x 3
= 9
B. Area of one lateral face of the pyramid = area of a triangle
= x base x height
= x 3 x 6.4
= 9.6
Area of one lateral face of the pyramid = 9.6
C. The lateral surface area of the pyramid = 4 x area of one lateral face
= 4 x 9.6
= 38.4
The lateral surface area of the pyramid = 38.4
D. The total surface area of the pyramid = lateral surface area of the pyramid + area of the base
= 38.4 + 9
= 47.4
The total surface area of the pyramid = 47.4