A rectangl
e field has an anrea of 40cm^2. if one side of the field is 3n longer than the other side, find the new area of the field where the length of each side is increased by 10%

   48.4 cm^2

Step-by-step explanation:

l*h=40 cm^2

l*(l+3)=40 cm^2

l*(l+3)=5*8

so l=5, h=8

when l=5+10/100 *5=5+1/2=5.5 cm

       h=8+10/100*8=8+8/10=8.8 cm

Area  now is 5.5*8.8=48.4 cm^2

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer