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Answered by
1
Answer:
11)lb
12) 2pie r
13) yz
14) a²-9
15)a^mn
Step-by-step explanation:
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Answered by
20
Answer:
Q11
Given
- Length = l
- Breath = b
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Q 12.
Given
- Radius= r
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Q 13.
Cross multiply
⚘Therefore xw is equal to zy.
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Q 14.
(a-3)(a+3)
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Q 15.
here the concept of exponent and power is used. When bases are same and multiplied then the powers get added.
so
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