What is the surface area of a triangular pyramid if each face has an area of 80 m2? A. 240 m2 B. 160 m2 C. 320 m2 D. 20 m2
1 answer:
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Answer:
10
Step-by-step explanation:
let the number be n then half the number is n , so
n + 69 = 74 ( subtract 69 from both sides )
n = 5 ( multiply both sides by 2 to clear the fraction )
n = 10
Thus the number is 10
Answer:
Step-by-step explanation:
Area of Rectangle = Length x Breadth
=