= 25 cm
= s × s + 4 × a × t ÷ 2
= 14 × 14 + 4 × 14 × 25 ÷ 2
= 196 + 700 cm²
= 896 cm² (A.)
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= 25 cm
= s × s + 4 × a × t ÷ 2
= 14 × 14 + 4 × 14 × 25 ÷ 2
= 196 + 700 cm²
= 896 cm² (A.)