Solve SA = ars + 1
for s

s = (SA - 1)/ar

Step-by-step explanation:

from the question SA = ars + 1 we want to make s the subject of the formulae

so from,

SA = ars + 1

SA- 1 = ars

divide both sides by ar

(SA - 1)/ar = ars/ar

(SA - 1)/ar = s

therefore ,

s = (SA - 1)/ar

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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