The triangle in the drawing is semi equilateral. Therefore a=√(14^2-7^2)=12.12 cm
The base of a regular pyramid consists of 6 equilateral triangles. The area of each triangle is: (14*12.12)/2 = 84.87 cm^2
The base: 6*84.87=509.22 cm^2
Eleven million, seven hundred sixty thousand, eight hundred twenty five
Hope this helps!
The Tama monorail runs for 18 hours every day.
Answer:
B C and D
Step-by-step explanation:
common sense
