Объяснение:
1)
S=½*a*h=2,4*4/2=4,8см²
__________
2) S=½*a*h; →
h=2*S/a=2*81/9=18дм
3) S=½*a*h; →
a=2*S/h=2*65/5=26м
___________
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Объяснение:
1)
S=½*a*h=2,4*4/2=4,8см²
__________
2) S=½*a*h; →
h=2*S/a=2*81/9=18дм
__________
3) S=½*a*h; →
a=2*S/h=2*65/5=26м
___________