Question

Rearrange the formula A=1/2 bhto make h the subject​

Answer 1

Answer:

SOLUTION

TO DETERMINE

To rearrange the formula to make b the subject

\displaystyle \sf{1. \: \: \: a = \frac{1}{2}(b - c) }1.a=

2

1

(b−c)

\displaystyle \sf{2. \: \: \: a = \frac{1}{2(b - c)} }2.a=

2(b−c)

1

EVALUATION

SOLVE FOR QUESTION : 1

\displaystyle \sf{ a = \frac{1}{2}(b - c) }a=

2

1

(b−c)

\displaystyle \sf{ \implies \: 2 a =(b - c) }⟹2a=(b−c)

\displaystyle \sf{ \implies \: 2 a + c =b}⟹2a+c=b

\displaystyle \sf{ \implies \: b = 2 a + c }⟹b=2a+c

Which is the required expression where b as the subject

SOLVE FOR QUESTION : 2

\displaystyle \sf{a = \frac{1}{2(b - c)} }a=

2(b−c)

1

\displaystyle \sf{ \implies \: (b - c) = \frac{1}{2a} }⟹(b−c)=

2a

1

\displaystyle \sf{ \implies \: b= c + \frac{1}{2a} }⟹b=c+

2a

1

\displaystyle \sf{ \implies \: b= \frac{2ac + 1}{2a} }⟹b=

2a

2ac+1

Which is the required expression where b as the subject

Step-by-step explanation:

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