Hello :
cos60 = cos(-60)=0.5
Answer:
D. 4.5 kg
Step-by-step explanation:
A. heads
A jellyfish has no ears or eyes or nose and no brain or heart. They do not even have a head as their body is almost totally made of water and is soft having no bones at all.
Answer:

Step-by-step explanation:
We have the square and four equilateral triangles.
The formula of an area of a squre:

a - length of side
The formula of an area of an equilateral triangle:

a - length of side
Clculate the areas:
SQURE:

TRIANGLE:

The SURFACE AREA of a square pyramid:

Put x = 5:
