1) what is formula to calculate perimeter of a) 4 x sides b) 4÷ sides 2) what is formula to calculate perimeter of rectangle a) 2×2 b) (2×lengt)+(2×bredth 3) what is formula to calculate perimeter of triangle a) side+side+side b) 3 × sides

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?