= (a-5).(a+3)
= a²+3a-5a-15
= a²-2a-15
Answer:
Area = 49π
Step-by-step explanation:
circle Area = π x (radius)²
Assuming d = 14 is the diameter (which the problem really should state explicitly, not leave you to assume), then the radius is half of that.
So r = 7, where 'r' is the radius.
Area = π x r² = π(7)² = π(49)
Area = 49π is the exact answer, so it is the one I prefer.
Area = 153.86 is the decimal you get if you multiply 49 x 3.14
Hope this helps.
S=4π<span>r<span>2 - this is the equation for the surface area of a sphere. We know that the radius (r) is 3.5 so here's how to solve this:
S = 4</span></span><span>π r2
S = 4</span><span>π (3.5)2
S = 4</span><span>π 12.25
S = 49</span><span>π
The surface area of a sphere with radius of 3.5 is 49</span><span>π.</span>
1. Is 46.7
2. x =57
3. 15.22
4. 14 + j = 28
5.
Answer:
124÷2=62
Step-by-step explanation:
Each person has 62 marbles.
The beginning of the problem is not needed to answer the question. The only thing you need to know to answer the question is that they have 124 marbles together.
