24] L=1/2×(a+b)×t
=1/2×(22+32)×10
=270 cm²
25] L=pxl= 40×28 = 1.120 cm²
26] L=1/4×πr²
=1/4×22/7×28×28
=616 cm²
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24] L=1/2×(a+b)×t
=1/2×(22+32)×10
=270 cm²
25] L=pxl= 40×28 = 1.120 cm²
26] L=1/4×πr²
=1/4×22/7×28×28
=616 cm²