Question

3. Squares = A quadrilateral with all 4 sides equal and one right angle Area or A = lw but in a square all sides equal we use A = SA2 or s*s with s = length of a side. Find P and A if s = 13. a. Find A if s = 3 1/2. b. Find A if s = 8.257 and round to the nearest hundredth. c. Find s if A = 361. d. Find s if A = 562 and round to the nearest hundredth

Answer 1

we have that

Part A

s=3 1/2

Find A

A=s^2

s=3 1/2=7/2

substitute

A=(7/2)^2

A=49/4 unit2

convert to mixed number

49/4=48/4+1/4=12+1/4=12 1/4 unit2

Part b

S=8.257 units

A=(8.257)^2

A=72.71 unit2

Part c

A=361 unit2

Find s

A=s^2

substitute

361=s^2

square root both sides

s=19 units

Part d

A=562 unit2

A=s^2

562=s^2

s=23.71 units