(半径×3.14+半径)×2=半径×8.28这是怎么解到8.28的
1个回答
(r*3.14+r)*2=r*8.28
2r*3.14+2r=r*8.28
2r*4.14=r*8.28
8.28r=8.28
相关问题
计算:-3.14×35.2+6.28×(-23.2)-1.57×36.8.
圆的面积计算公式是圆周率×半径×2 还是圆周率×半径×半径
我只要面积2个算式全要?半径=C÷3.14÷2=1.884÷6.28=0.3; 面积=3.14×0.3×0.3=0.28
232.14+64.28×0.5378×0.25+0.5378×64.28×0.75-8×64.28×0.125×0.5
8 21 × 7 16 = 2 3 ÷14= 26× 12 13 = 14 13 ÷28= 12× 4 3 = 9 8
3.28×37+6.4×32.8-3.28
7(3+×)-2(×+4)=28-5×解方程怎么解?
体积=底面积×高=π×半径²×高=π×半径²×2高=2π半径³
56×165÷(7×11)+144×13÷156 (28.8+28.5+28.7+28.1+28.6)÷5 41.2×8
解方程:2X+(14-3-X)×1+3×3=28