In A and in C, only the angles of one triangle are congruent to the corresponding angles of the other triangle. That proves similar triangles but not necessarily congruent triangles.
<em>Definition of congruent triangles:</em>
<em>Two triangle are congruent if all angles of one triangle are congruent to all corresponding angles of the other triangle and all sides of one triangle are congruent to all corresponding sides of the other triangle.</em>
Πr²h=175 πr²*7=175 Divide both sides by 7 πr²=25 Divide both sides by π (3.14) r²=7.96 Square root of 7.96=2.82 r=2.82 Diameter is 2r. 2.82*2 2.82*2=5.64
She would save 54.45 because addding them up individually before the plan would cost 184.49 and to find the difference all you have to do is subtract 184.49-129.99 and that would tell you how much she saved
