(1)
周长L=2*(a+2a+2a+2a+a+1.5b+2.5b)+4*2.5b=16a+18b
面积s =(a+2a+2a+2a+a)(1.5b+2.5b)-2*2a*2.5b=22ab
(2)
周长L=16*3+18*4=120cm
面积s =22*3*4=264cm^2
(1)
周长L=2*(a+2a+2a+2a+a+1.5b+2.5b)+4*2.5b=16a+18b
面积s =(a+2a+2a+2a+a)(1.5b+2.5b)-2*2a*2.5b=22ab
(2)
周长L=16*3+18*4=120cm
面积s =22*3*4=264cm^2