Question

What is the breadth if the length is 8.75 cm and perimeter 35.5 cm?And also find it's area.

Answer 1

Step-by-step explanation:

Length=?

Breadth=8.75cm

then, perimeter=2(l + b)=2(l +8.75 )

but, perimeter= 35.5 cm. - given

therefore, 2(l + 8.75) = 35.5

l+ 8.75 = 35.5/2= 17.75

l= 17.75-8.75

l=9

hence, length in 9 cm

Answer 2

Answer:

We know that, $P = 2*(l+b)$

$P = 2*l+2*b$

$P = 2*8.75+2*b$

$\frac{35.5}{2} = 8.75+2*b$

$17.75 - 8.75=2*b$

$\frac{9}{2} = b$

Answer 1: $4.5 = b$

We know that, $A = l*b$

$A = 8.75* 4.50$

Answer 2: $A = 39.37$

Note: All values are in cm unit.

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