【进阶级练习题80】 * I# V) L! ~9 }( M5 f/ K, v, _9 A ?" e5 v 4 p, X' e" ]$ H9 l' R- E6 g求:" z( g8 N; B0 _; T) x4 I, ]& r6 L
1. AB 长度为何? 9 }5 d, M; I- Q8 v& J# G3 U& L a. 58.3368 b. 58.3683 c. 58.3836: i- u; [7 h1 R: Y4 T7 ?7 G
2. CD 长度为何? y* l% P/ k* u, ~: g0 {' u' z: f
a. 50.9082 b. 50.9208 c. 50.9802! F& Q% e- S2 ^) t1 v$ M
3. EF 长度为何?0 C# u% \0 a7 p0 v
a. 54.4677 b. 54.4767 c. 54.4776 9 }; W; j8 w# V3 W4. GH 长度为何?& J# @7 P* O, ]' Y9 T1 M( {
a. 50.4061 b. 50.4106 c. 50.4601 % ]( E7 P1 `, c" t5 b3 ]5. 最外围之面积为何? 1 u+ N" H$ Q3 }) E+ I4 t- a' h+ h4 Z a. 5185.6013 b. 5185.6103 c. 5185.6310
1. AB 长度为何? 6 K4 R9 Q7 [5 e% Y( } a. 58.3368 " C# ?$ A4 a% J2. CD 长度为何? * {- k4 r' w+ G( e c. 50.98027 S* d [* J6 K3 G
3. EF 长度为何? ! A+ N4 E( I& B) ^, q# C a. 54.4677 ) s; |$ F% { N/ z) V4. GH 长度为何? : x; P. w3 b6 v' Z: f4 u) h. p a. 50.4061 & p' b+ v7 r- J5 p {6 P
5. 最外围之面积为何? / v# k9 S0 F$ _9 q! o8 m c. 5185.6310
1. AB 长度为何? a. 58.33687 {# M0 {: F$ w0 j# c
) C; i. [; u8 c3 [
2. CD 长度为何? c. 50.9802, p/ G7 k$ n0 \, B
. }9 i, r# c. ^; m: c
3. EF 长度为何? a. 54.4677 3 ?4 ~* ~6 |, Q' U$ z2 f+ B & Y# A! M$ x9 j4 ~% E0 I4. GH 长度为何? a. 50.4061! {0 f. f; Y4 D$ j6 ?5 U; P