Answer:
±625
Step-by-step explanation:
±625
An art class is making a mural for their school which has a triangle drawn in the middle. The length of the bottom of the triang
1 answer:
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28. Answer: 86% decrease
<u>Step-by-step explanation:</u>
Original Sphere has a radius of 100% → r =1
Surface Area of Original Sphere:
S.A. = 4πr²
= 4π(1)²
= 4π
New Sphere has a diameter of 75% → d = 0.75 → r = 0.375
Surface Area of New Sphere:
S.A. = 4πr²
= 4π(0.375)²
= 0.5625π
<em>The negative sign represents a decrease.</em>
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29. Answer: 72 bottles
<u>Step-by-step explanation:</u>
Volume of a hemisphere is:
Volume of a cylinder is:
The number of cylinders needed is: