Use the formula for finding the surface area of a rectangular prism.

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

8 0

The formula, when solved for B is, $\frac{1}{2}(A-PH)$ .

Step-by-step explanation:

Given,

Formula used to find surface area of a rectangular prism

A = PH + 2B

Solving the formula for B;

Subtracting PH from both sides

$A-PH=PH-PH+2B\\A-PH=2B\\2B=A-PH$

Dividing both sides by 2

$\frac{2B}{2}=\frac{A-PH}{2}\\\\B=\frac{1}{2}(A-PH)$

The formula, when solved for B is, $\frac{1}{2}(A-PH)$ .

Keywords: subtraction, division

Learn more about subtraction at:

#LearnwithBrainly

You might be interested in

two arcs of concentric circles are intercepted by the same central angle. the resulting arc length of the arc of the larger circ

Bond [772]

the complete question in the attached figure

Let
A°-----------> the same central angle

For the larger circle
length of larger circle=2*pi*r-------> 2*pi*12-----> 75.36 m

360° (full circle) has a length of------------> 75.36 m
A°-----------------------------------> 16 m
A°=(16)*360/75.36--------> A=76.43°

For the smaller circle
length of smaller circle=2pi*r-------> 2*pi*7.5-----> 47.1 m

360° (full circle) has a length of------------> 47.1 m
76.43°-----------------------------------> X
X=76.43*47.1/360-----> X=10 m ----> length arc of the smaller circle

the answer is
the length arc of the smaller circle is 10 m