Jawabanmu

2014-04-21T22:34:07+07:00
K Alas= 88cm
Lselimut=2552cm²
d=....?
Lsisi=......?
a. KAlas= \pi ×d
    88= \frac{22}{7} ×d
    d=88×7÷22=28cm
b. Lsisi=2×LAlas+LSelimut
    =2× \frac{22}{7} ×14²+2552
    =1232+2552=3784cm²